Statement of Financial Position [Abstract]
Statement [Table]
Statement [Table]
Scenario [Axis]
Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Statement [Line Items]
Statement [Line Items]
Assets
Assets [Abstract]
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Short-term investments
Short-term Investments
Accounts receivable, net of allowances of $900 and $413
Accounts Receivable, Net, Current
Inventories, net
Inventory, Net
Deferred contract costs
Deferred Costs, Current
Prepaid expenses and other current assets
Prepaid Expense and Other Assets, Current
Total current assets
Assets, Current
Property and equipment, net
Property, Plant and Equipment, Net
Long-term inventory
Inventory, Noncurrent
Goodwill
Goodwill
Other intangible assets, net
Intangible Assets, Net (Excluding Goodwill)
Deferred tax assets
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent
Long-term accounts receivable
Accounts Receivable, Net, Noncurrent
Other long-term assets
Other Assets, Noncurrent
Total assets
Assets
Liabilities and Shareholders' Equity
Liabilities and Equity [Abstract]
Accounts payable
Accounts Payable, Current
Accrued expenses and other
Accrued Liabilities, Current
Deferred revenue, current
Deferred Revenue, Current
Current maturities of long-term debt
Long-term Debt, Current Maturities
Total current liabilities
Liabilities, Current
Long-term debt, less current maturities
Long-term Debt, Excluding Current Maturities
Deferred revenue, long-term
Deferred Revenue, Noncurrent
Other long-term liabilities
Other Liabilities, Noncurrent
Total liabilities
Liabilities
Commitments and contingencies (See Note G)
Commitments and Contingencies
Shareholders' equity:
Stockholders' Equity Attributable to Parent [Abstract]
Common stock, no par value: Shares authorized: 200,000,000 at March 31, 2013 and December 31, 2013; shares issued: 30,498,900 and 30,796,592 at March 31, 2013 and December 31, 2013; shares outstanding: 20,162,397 and 21,298,930 at March 31, 2013 and December 31, 2013
Common Stock, Value, Issued
Additional paid-in capital
Additional Paid in Capital
Treasury stock: 10,336,503 and 9,497,662 common shares at March 31, 2013 and December 31, 2013
Treasury Stock, Value
Shareholder notes receivable
Receivable from Shareholders or Affiliates for Issuance of Capital Stock
Retained deficit
Retained Earnings (Accumulated Deficit)
Total shareholders' equity
Stockholders' Equity Attributable to Parent
Total liabilities and shareholders' equity
Liabilities and Equity
Stockholders' Equity Note [Abstract]
Schedule of Employee Stock Ownership Plan (ESOP) Disclosures [Table]
Schedule of Employee Stock Ownership Plan (ESOP) Disclosures [Table]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Minimum [Member]
Minimum [Member]
Maximum [Member]
Maximum [Member]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]
Shares issued from treasury
Summary Of Issuance Of Stock Under Employee Stock Ownership Plan [Abstract]
Summary of Issuance of Stock Under Employee Stock Ownership Plan.
Shares Issued Under ESPP Plan
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Closing Market Price
Employee Stock Purchase Plan Closing Market Price Of Shares Purchased
Employee stock purchase plans weighted averages purchase price of shares purchased.
Closing Market Price, Total
Employee Stock Purchase Plans Weighted Average Purchase Price Of Shares Purchased Net
Employee stock purchase plans weighted average purchase price of shares purchased net.
Shares Issued Under Loan Program
Employee Stock Purchase Plans Debt Structure Shares Issued
Employee stock purchase plans debt structure shares issued.
Shares Issued Under Loan Program, Total
Employee Stock Purchase Plans Debt Structure Shares Issued Net
Employee stock purchase plans debt structure shares issued net.
Dollar Value of Loans Issued
Employee Stock Purchase Plans Debt Structure Direct Loan Amount
Employee stock purchase plans debt structure direct loan amount.
Dollar Value of Loans Issued, Total
Employee Stock Purchase Plans Debt Structure Direct Loan Amount Net
Employee stock purchase plans debt structure direct loan amount net.
Repayment of Loans
Employee Stock Purchase Plans Debt Structure Direct Loan Repayment Amount
Employee stock purchase plans debt structure direct loan repayment amount.
Repayment of Loans, Total
Employee Stock Purchase Plans Debt Structure Direct Loan Repayment Amount Net
Employee stock purchase plans debt structure direct loan repayment amount net.
Accounting Policies [Abstract]
Inventories
Inventory, Net, Items Net of Reserve Alternative [Abstract]
Raw materials and components
Inventory, Raw Materials, Net of Reserves
Work in process
Inventory, Work in Process, Net of Reserves
Finished goods
Inventory, Finished Goods, Net of Reserves
Total
Concentration Risk [Table]
Concentration Risk [Table]
Major Customers [Axis]
Major Customers [Axis]
Name of Major Customer [Domain]
Name of Major Customer [Domain]
Customer 1 [Member]
Customer 1 [Member]
Customer 1 [Member]
Customer 2 [Member]
Customer 2 [Member]
Customer 2 [Member]
Business Segments [Axis]
Business Segments [Axis]
Segment [Domain]
Segment [Domain]
Energy Management [Member]
Energy Management [Member]
Energy Management Member.
Engineered Systems [Member]
Engineered Systems [Member]
Engineered Systems Member
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Sales Revenue, Services, Net [Member]
Sales Revenue, Services, Net [Member]
Accounts Receivable [Member]
Accounts Receivable [Member]
Sales [Member]
Sales [Member]
Concentration Risk Type [Axis]
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Customer Concentration Risk [Member]
Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration Risk [Line Items]
Concentration risk, percentage
Concentration Risk, Percentage
Concentration risk, number of entities involved in risk calculation
Concentration Risk, Number of Entities Involved in Risk Calculation
Concentration Risk, Number of Entities Involved in Risk Calculation
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Business Acquisition [Axis]
Business Acquisition [Axis]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree [Domain]
Harris [Member]
Harris [Member]
Harris [Member]
Nonrecurring Adjustment [Axis]
Nonrecurring Adjustment [Axis]
Nonrecurring Adjustment [Domain]
Nonrecurring Adjustment [Domain]
Acquisition-related Costs [Member]
Acquisition-related Costs [Member]
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Pro Forma Results of Operations
Business Acquisition, Pro Forma Information [Abstract]
Tax benefit
Business Acquisition, Pro Forma Income Tax Expense (Benefit)
Business Acquisition, Pro Forma Income Tax Expense (Benefit)
Revenue
Business Acquisition, Pro Forma Revenue
Net loss (income) available to common shareholders
Business Acquisition, Pro Forma Net Income (Loss)
Basic
Business Acquisition, Pro Forma Earnings Per Share, Basic
Diluted
Business Acquisition, Pro Forma Earnings Per Share, Diluted
Non-recurring aggregate acquisition-related costs
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Award Type [Axis]
Award Type [Axis]
Award Type [Domain]
Award Type [Domain]
Non-Employee Director [Member]
Non-Employee Director [Member]
Non-Employee Director [Member]
Consultant [Member]
Consultant [Member]
Consultant [Member]
Restricted shares [Member]
Restricted Stock [Member]
Plan Name [Axis]
Plan Name [Axis]
Plan Name [Domain]
Plan Name [Domain]
2003 Stock Option [Member]
Two Thousand Three Stock Option [Member]
Two thousand three stock option.
2004 Stock and Incentive Awards Plan [Member]
Two Thousand Four Stock and Incentive and Award Plan [Member]
2004 stock and incentive awards plan.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Restricted Shares and Warrants (Textual) [Abstract]
Stock Options Restricted Shares and Warrants (Textual) [Abstract]
Stock options restricted shares and warrants textual.
Reserved shares for issuance to key employees
Common Stock, Capital Shares Reserved for Future Issuance
Vesting period
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period
Maximum life of option under the plan
Share Based Compensation Arrangements by Share Based Payments Award Option Maximum Life
Share-based compensation by share based payments award options maximum life.
Shares issued
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period
Weighted-average per share price on grant date
Share-based Compensation Arrangement By Share Based Payment Award, Per Share Price
Share-based Compensation Arrangement By Share Based Payment Award, Per Share Price
Restricted shares granted
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period
Grant of shares to consultant as part of consulting compensation agreement
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued
Share-based Goods and Nonemployee Services Transaction, Securities Issued Valuation Price Per Share
Share-based Goods and Nonemployee Services Transaction, Securities Issued Valuation Price Per Share
Share-based Goods and Nonemployee Services Transaction, Securities Issued Valuation Price Per Share
Compensation cost related to non-vested common stock-based compensation
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized
Recognition of compensation cost for restricted shares
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition
Common stock closing price
Fair Value Of Closing Common Stock Price
Fair value of closing common stock price.
Deferred stock-based compensation related to grants of restricted shares, period of recognition
Deferred Compensation Arrangement With Individual Compensation Expense Period of Recognition
Deferred compensation arrangement with individual compensation expense period of recognition.
Deferred stock-based compensation related to grants of restricted shares
Deferred Compensation Arrangement with Individual, Compensation Expense
Debt Disclosure [Abstract]
Long-term debt
Schedule of Debt [Table Text Block]
Related Party Transactions [Abstract]
RELATED PARTY TRANSACTIONS
Related Party Transactions Disclosure [Text Block]
Commitments and Contingencies Disclosure [Abstract]
Long-term Purchase Commitment [Table]
Long-term Purchase Commitment [Table]
Category of Item Purchased [Axis]
Category of Item Purchased [Axis]
Long-term Purchase Commitment, Category of Item Purchased [Domain]
Long-term Purchase Commitment, Category of Item Purchased [Domain]
Inventories [Member]
Inventories [Member]
Long-term Purchase Commitment [Line Items]
Long-term Purchase Commitment [Line Items]
Rent expense under operating leases
Operating Leases, Rent Expense, Net
Non-cancellable purchase commitments
Purchase Commitment, Remaining Minimum Amount Committed
Operating lease commitments
Operating Leases, Future Minimum Payments Due, Next Twelve Months
Purchase obligations
Purchase Obligation, Due in Next Twelve Months
Right issue share price
Right issue Share Price
Right issue share price.
Rights Distribution Date, Trigger, Number of Business Days After Commencement or Offer
Rights Distribution Date, Trigger, Number of Business Days After Commencement or Offer of Acquisition
Number of business days after the commencement of, or the announcement of an intention to make, a tender offer or exchange offer that would result in any such person or group of persons acquiring such beneficial ownership.
Minimum subscription percentage
Minimum Subscription Percentage
Minimum Subscription Percentage
Share acquisition percentage
Acquisition Share Void Percentage
Acquisition share void percentage.
Prior to a person becoming an Acquiring Person, the Board of Directors of the Company's redemption Rate on per Right Shares
Share Purchase Rights Redemption Price
Share purchase rights redemption price.
Employee stock purchase plan authorized
Employee Stock Purchase Plans Shares Authorized
Employee stock purchase plans shares authorized.
Maximum amount limit for ESPP per employee
Maximum Amount Limit For Employee Stock Purchase Plan Per Employee
Maximum amount limit for employee stock purchase plan per employee.
Purchase price to market price matching percentage
Employee Stock Purchase Plan Purchase Price to Market Price Matching Percentage
Purchase price to market price matching percentage.
Sec 16 Officers limit percentage on ESPP based on annual income
Employee Stock Purchase Plan Allowed Loan Amount Percentage Of Annual Income
Allowed loan amount percentage of annual income.
Sec 16 officers maximum limit on ESPP in amounts
Employee Stock Purchase Plans Loan Maximum Outstanding Amount
Employee stock purchase plans loan maximum outstanding amount.
Interest loans charged period
Employee Stock Purchase Plan IRS Loan Interest Rate
Interest loan charged.
Class of Treasury Stock [Table]
Class of Treasury Stock [Table]
Share Repurchase Program [Axis]
Share Repurchase Program [Axis]
Share Repurchase Program [Domain]
Share Repurchase Program [Domain]
October 2011 [Member]
October 2011 [Member]
October 2011 [Member]
Equity, Class of Treasury Stock [Line Items]
Equity, Class of Treasury Stock [Line Items]
Maximum authorized repurchase of shares
Stock Repurchase Program, Authorized Amount
Increase in maximum authorized repurchase of shares with respect to outstanding common stock
Stock Repurchase Program Increase In Authorized Repurchase Amount
Stock repurchase program increase in authorized repurchase amount.
Total number of shares repurchased
Treasury Stock, Shares, Acquired
Cost of repurchased shares
Payments for Repurchase of Common Stock
STOCK OPTIONS, RESTRICTED SHARES AND WARRANTS
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Customer Relationships [Member]
Customer Relationships [Member]
Developed Technology [Member]
Developed Technology Rights [Member]
Non-competition Agreement [Member]
Noncompete Agreements [Member]
Minimum [Member]
Maximum [Member]
Intangible assets, estimated economic useful life
Finite-Lived Intangible Asset, Useful Life
Income Tax Disclosure [Abstract]
Reconciliation of the statutory federal income tax rate and the effective income tax rate
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Statutory federal tax rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate
State taxes, net
Effective Income Tax Rate Reconciliation, State and Local Income Taxes
Federal tax credit
Effective Income Tax Rate Reconciliation, Tax Credits, Research
State tax credit
Effective Income Tax Rate Reconciliation, Tax Credits, Other
Change in valuation reserve
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance
Permanent items
Effective Income Tax Rate Reconciliation, Nondeductible Expense
Effective Income Tax Rate Reconciliation, Tax Contingencies
Effective Income Tax Rate Reconciliation, Tax Contingencies
Prior year permanent differences
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes
Other, net
Effective Income Tax Rate Reconciliation, Other Adjustments
Effective income tax rate
Effective Income Tax Rate, Continuing Operations
COMMITMENTS AND CONTINGENCIES
Commitments and Contingencies Disclosure [Text Block]
Subsequent Event [Member]
Subsequent Event [Member]
Subsequent Event Type [Axis]
Subsequent Event Type [Axis]
Subsequent Event Type [Domain]
Subsequent Event Type [Domain]
Purchase agreement, value
Business Combination, Consideration Transferred, Initial Purchase Agreement, Amount
Business Combination, Consideration Transferred, Initial Purchase Agreement, Amount
Purchase agreement, potential adjustment, amount
Business Combination, Consideration Transferred, Initial Purchase Agreement, Contingent Adjustment, Amount
Business Combination, Consideration Transferred, Initial Purchase Agreement, Contingent Adjustment, Amount
Acquisition consideration, cash
Payments to Acquire Businesses, Gross
Acquisition consideration, debt
Business Combination, Consideration Transferred, Liabilities Incurred
Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.
Acquisition consideration, shares
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares
Acquisition consideration, share price (per share)
Business Acquisition, Acquisition Consideration, Share Price
Business Acquisition, Acquisition Consideration, Share Price
Acquisition share price determination, trading days before purchase agreement
Business Acquisition, Share Price Determination, Threshold Trading Days Before Purchase Agreement
Business Acquisition, Share Price Determination, Threshold Trading Days Before Purchase Agreement
Acquisition share price determination, trading days after purchase agreemen
Business Acquisition, Share Price Determination, Threshold Trading Days After Purchase Agreement
Business Acquisition, Share Price Determination, Threshold Trading Days After Purchase Agreement
Purchase accounting provisions, share price (per share)
Business Acquisition, Share Price
Business Combination, Fixed Future Consideration, Amount
Business Combination, Fixed Future Consideration, Amount
Business Combination, Fixed Future Consideration, Amount
Business acquisition, common stock issued
Business Acquisition, Cost of Acquired Entity, Equity Interests Issued and Issuable
Business Combination, Fixed Future Consideration, Shares, Price Per Share
Business Combination, Fixed Future Consideration, Shares, Price Per Share
Business Combination, Fixed Future Consideration, Shares, Price Per Share
Business Combination, Fixed Future Consideration, Cash
Business Combination, Fixed Future Consideration, Cash
Business Combination, Fixed Future Consideration, Cash
Total revenues since the date of acquisition
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual
Pre-tax loss since the date of acquisition
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual
Acquisition related costs
Business Combination, Acquisition Related Costs
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Summary of restricted shares granted to key employees
Restricted Shares Issued to Key Employees [Abstract]
Restricted shares issued to key employees.
Shares issued
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Compensation expense
Allocated Share-based Compensation Expense
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Energy Management [Member]
Engineered Systems [Member]
Corporate and Other [Member]
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Corporate and Other
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Revenues
Revenues
Operating Income (Loss)
Operating Income (Loss)
Due from the third party finance company in future periods
Receivables, Long-term Contracts or Programs [Abstract]
Fiscal 2014
Contract Receivable, Due in Remainder of Fiscal Year
Fiscal 2015
Contract Receivable, Due in Next Twelve Months
Fiscal 2016
Contract Receivable, Due in Year Two
Fiscal 2017
Contract Receivable, Due in Year Three
Total gross financed receivable
Contract Receivable
Less: amount above to be collected during the next 12 months
Contract Receivable, Due in Next Rolling Twelve Months
Less: amount representing interest
Interest Receivable
Net long-term receivable
Long-term Investments and Receivables, Net
Schedule of Cash and Cash Equivalents [Table]
Schedule of Cash and Cash Equivalents [Table]
Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Domain]
Cash and Cash Equivalents [Domain]
Money market funds [Member]
Money Market Funds [Member]
Bank certificate of deposit [Member]
Certificates of Deposit [Member]
Cash and Cash Equivalents [Line Items]
Cash and Cash Equivalents [Line Items]
Amortized cost and fair value of short-term investments, with gross unrealized gains and losses
Short-term Investments [Abstract]
Amortized Cost
Available-for-sale Debt Securities, Amortized Cost Basis
Unrealized Gains
Available-for-sale Securities, Gross Unrealized Gains
Unrealized Losses
Available-for-sale Securities, Gross Unrealized Losses
Fair Value
Available-for-sale Securities, Debt Securities
Cash and Cash Equivalents
Cash Equivalents, at Carrying Value
Short-Term Investments
Subsequent Events [Abstract]
SUBSEQUENT EVENTS
Subsequent Events [Text Block]
Schedule of Property, Plant and Equipment [Table]
Schedule of Property, Plant and Equipment [Table]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Domain]
Land improvements [Member]
Land Improvements [Member]
Buildings and building improvements [Member]
Building and Building Improvements [Member]
Leasehold improvements [Member]
Leaseholds and Leasehold Improvements [Member]
Furniture, fixtures and office equipment [Member]
Furniture and Fixtures [Member]
Equipment Leased to Other Party [Member]
Equipment Leased to Other Party [Member]
Plant equipment [Member]
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Depreciation using the straight-line method
Property, Plant and Equipment, Net [Abstract]
Property, plant and equipment, useful life
Property, Plant and Equipment, Useful Life
Property, plant and equipment estimated useful life
Property Plant And Equipment Estimated Useful Life
Property plant and equipment estimated useful life.
LONG-TERM DEBT
Long-term Debt [Text Block]
Stock-based compensation
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
Summary of share based payment awards
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
Summary of outstanding non-vested stock options
Schedule of Nonvested Share Activity [Table Text Block]
Summary of restricted shares granted
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
Summary of outstanding warrants exercise price
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Summary of outstanding warrants exercise price
Schedule Of Warrants
Schedule of warrants.
Number of Warrants
Class of Warrant or Right, Number of Securities Called by Warrants or Rights
Exercise Price
Class of Warrant or Right, Exercise Price of Warrants or Rights
SHAREHOLDERS' EQUITY
Stockholders' Equity Note Disclosure [Text Block]
ACQUISITION
Business Combination Disclosure [Text Block]
Amortized cost and fair value of short-term investments, with gross unrealized gains and losses
Marketable Securities [Table Text Block]
Credit quality of the Company's financing receivables using Aging Analysis
Financing Receivable Credit Quality Indicators [Table Text Block]
Inventories
Schedule of Inventory, Current [Table Text Block]
Property and equipment
Property, Plant and Equipment [Table Text Block]
Schedule of Intangible Assets and Goodwill
Schedule of Intangible Assets and Goodwill [Table Text Block]
Due from the third party finance company in future periods
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Changes in warranty accrual
Schedule of Product Warranty Liability [Table Text Block]
Fair value of each option grant
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Summary of the effect of net income per common share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Number of potentially dilutive securities
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
SEGMENTS
Segment Reporting Disclosure [Text Block]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Non-vested at March 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares
Granted
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Vested
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares
Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares
Non-vested at December 31, 2013
Line of Credit Facility [Table]
Line of Credit Facility [Table]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term Debt, Type [Domain]
Harris Seller's Note [Member]
Harris Seller's Note [Member]
Harris Seller's Note [Member]
Variable Rate [Axis]
Variable Rate [Axis]
Information by type of variable rate.
Variable Rate [Domain]
Variable Rate [Domain]
[Domain] for Information by type of variable rate.
London Interbank Offered Rate (LIBOR) [Member]
London Interbank Offered Rate (LIBOR) [Member]
Interest rate at which a bank borrows funds from other banks in the London interbank market.
Credit Facility [Axis]
Credit Facility [Axis]
Credit Facility [Domain]
Credit Facility [Domain]
Revolving Credit Facility [Member]
Revolving Credit Facility [Member]
Line of Credit [Member]
Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Debt (Textual) [Abstract]
Debt (Textual) [Abstract]
Long term debt.
Debt Instrument, Face Amount
Debt Instrument, Face Amount
Debt Instrument, Interest Rate, Stated Percentage
Debt Instrument, Interest Rate, Stated Percentage
Maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Maximum borrowing capacity before subject to borrowing base requirements
Line of Credit Facility, Maximum Borrowing Capacity Not Subject to Borrowing Base
Maximum borrowing capacity under the credit facility that could be borrowed or the amounts currently outstanding under the facility prior to consideration of base requirements.
Letters of credit for the Company's account in the aggregate principal amount
Line of Credit Facility, Borrowing Base Requirement Limit on Letters of Credit
Borrowing Base Requirement Limit on Letters of Credit
Outstanding letters of credit totaling
Letters of Credit Outstanding, Amount
Borrowings by the company under credit agreement
Line of Credit Facility, Amount Outstanding
Total liabilities to tangible networth ratio, minimum
Liabilities to Networth Ratio Minimum
Total liabilities to net worth ratio minimum.
Average daily unencumbered liquidity required
Line of Credit Facility, Covenant Terms, Average Daily Unencumbered Liquidity Required
Line of Credit Facility, Covenant Terms, Average Daily Unencumbered Liquidity Required
Line of Credit Facility, Covenant Terms, Number of Consecutive Business Days During Each Period of Average Daily Unencumbered Liquidity Required
Line of Credit Facility, Covenant Terms, Number of Consecutive Business Days During Each Period of Average Daily Unencumbered Liquidity Required
Line of Credit Facility, Covenant Terms, Number of Consecutive Business Days During Each Period of Average Daily Unencumbered Liquidity Required
Debt Service Coverage Ratio Minimum
Debt Service Coverage Ratio Minimum
Debt Service Coverage Ratio Minimum
Funded Debt to EBITDA Ratio Minimum
Funded Debt to EBITDA Ratio Minimum
Funded Debt to EBITDA Ratio Minimum
Spread on basis rate
Debt Instrument, Basis Spread on Variable Rate
Average daily unused amount of the credit facility fee rate
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage
Customer contracts pledged as collateral
Line of Credit Facility, Customer Contracts Pledged as Collateral
Line of Credit Facility, Customer Contracts Pledged as Collateral
Income Statement [Abstract]
Product revenue
Sales Revenue, Goods, Net
Service revenue
Sales Revenue, Services, Net
Total revenue
Cost of product revenue
Cost of Goods Sold
Cost of service revenue
Cost of Services
Total cost of revenue
Cost of Revenue
Gross profit
Gross Profit
Operating expenses:
Operating Expenses [Abstract]
General and administrative
General and Administrative Expense
Acquisition and integration related
Sales and marketing
Selling and Marketing Expense
Research and development
Research and Development Expense
Total operating expenses
Operating Expenses
Income (loss) from operations
Other income (expense):
Nonoperating Income (Expense) [Abstract]
Interest expense
Interest Expense
Interest income
Investment Income, Interest
Total other income
Nonoperating Income (Expense)
Income (loss) before income tax
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest
Income tax (benefit) expense
Income Tax Expense (Benefit)
Net income (loss)
Net Income (Loss) Attributable to Parent
Basic net income (loss) per share attributable to common shareholders
Earnings Per Share, Basic
Weighted-average common shares outstanding
Weighted Average Number of Shares Outstanding, Basic
Diluted net income (loss) per share
Earnings Per Share, Diluted
Weighted-average common shares and share equivalents outstanding
Weighted Average Number of Shares Outstanding, Diluted
Schedule Of Extinguishment Of Debt [Table]
Schedule of Extinguishment of Debt [Table]
Extinguishment Of Debt [Axis]
Extinguishment of Debt [Axis]
Extinguishment Of Debt Type [Domain]
Extinguishment of Debt, Type [Domain]
Term note [Member]
Long-term Debt [Member]
Customer equipment finance notes payable [Member]
Customer Equipment Finance Notes Payable [Member]
Customer equipment finance notes payable.
First mortgage note payable [Member]
First Mortgage [Member]
Debenture payable [Member]
Debenture Payable [Member]
Debenture payable.
Other long-term debt [Member]
Other Long Term Debt [Member]
Other long term debt.
Extinguishment of Debt [Line Items]
Extinguishment of Debt [Line Items]
Long-term debt
Long-term Debt, by Current and Noncurrent [Abstract]
Total long-term debt
Long-term Debt
Less current maturities
Long-term debt, less current maturities
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Significant Accounting Policies [Text Block]
INCOME TAXES
Income Tax Disclosure [Text Block]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis]
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Report Line [Domain]
Cost of product revenue [Member]
Cost of Sales [Member]
General and administrative [Member]
General and Administrative Expense [Member]
Sales and marketing [Member]
Selling and Marketing Expense [Member]
Research and development [Member]
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]
Total
Trade Name and Trademarks [Member]
Trademarks and Trade Names [Member]
Rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style, or rights either acquired through registration of a business name to gain or protect exclusive use thereof.
Consideration paid to Harris Shareholders:
Business Combination, Consideration Transferred [Abstract]
Cash
Seller provided debt
Shares of Company common stock
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable
Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.
Contingent consideration arrangement
Business Combination, Consideration Transferred, Contingent Consideration Adjustment
Business Combination, Consideration Transferred, Contingent Consideration Adjustment
Total consideration paid
Business Combination, Consideration Transferred 1
Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.
Preliminary fair value allocation of the purchase price
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]
Cash and cash equivalents
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Cash And Equivalents
Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.
Accounts receivable, net
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets, Receivables
Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.
Inventories
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory
Other current assets
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Assets, Other
Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.
Property, plant and equipment
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment
Deferred tax asset
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deferred Tax Assets Noncurrent
Amount of deferred tax asset attributable to deductible temporary differences and carryforwards that are expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.
Identifiable intangible assets
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Intangible Assets, Other Than Goodwill
Amount of intangible assets, excluding goodwill, acquired at the acquisition date.
Accounts payable
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Accounts Payable
Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.
Deferred tax liabilities
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Deferred Tax Liabilities Noncurrent
Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date.
Accrued and other liabilities
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Current Liabilities, Other
Amount of other current liabilities assumed at the acquisition date.
Total identifiable net assets
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net
Assets acquired, goodwill, and liabilities assumed, net
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net
Employee stock purchase plan activity
Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity [Table Text Block]
Fair value of each option grant
Share Based Compensation Arrangement Fair Value Assumptions Expected Share Based Payment [Abstract]
Share based compensation arrangement fair value assumptions expected share based payment.
Weighted average expected term
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term
Risk-free interest rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Expected volatility
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Expected forfeiture rate
Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Forfeiture Rate
Share based compensation arrangement by share based payment award fair value assumptions expected forfeiture rate.
Common stock options [Member]
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant [Roll Forward]
Shares Available for Grant, Beginning Balance
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant
Shares Available for Grant, Granted to Employee
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Shares Issued to Employee
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Shares Issued to Employee
Shares Available for Grant, Granted to Non-Employee
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Shares Issued to Non-Employee
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Shares Issued to Non-Employee
Shares Available for Grant, Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Forfeited
Shares Available for Grant, Ending Balance
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Shares, Beginning Balance
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Number of Shares, Granted
Number of Shares, Forfeited
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period
Number of Shares, Exercised
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period
Number of Shares, Ending Balance
Number of Shares, Exercisable
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Beginning Balance (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Weighted Average Exercise Price, Granted Stock Options (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Forfeited (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Exercised (in dollars per share)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Weighted Average Exercise Price, Ending Balance (in dollars per share)
Weighted Average Exercise Price, Exercisable Ending Balance (in dollars per share)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Weighted Average Remaining Contractual Term
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Weighted Average Remaining Contractual Term
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term
Aggregate Intrinsic Value, Ending Balance (in dollars)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Aggregate Intrinsic Value (in dollars)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value
Principles of Consolidation
Consolidation, Policy [Policy Text Block]
Reclassifications
Reclassifications [Policy Text Block]
Reclassifications.
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Cash and Cash Equivalents
Cash and Cash Equivalents, Policy [Policy Text Block]
Short-Term Investments
Investment, Policy [Policy Text Block]
Fair Value of Financial Instruments
Fair Value of Financial Instruments, Policy [Policy Text Block]
Accounts Receivable
Receivables, Policy [Policy Text Block]
Financing Receivables
Finance, Loans and Leases Receivable, Policy [Policy Text Block]
Inventories
Inventory, Policy [Policy Text Block]
Deferred Contract Costs
Deferred Charges, Policy [Policy Text Block]
Prepaid Expenses and Other Current Assets
Prepaid Expenses And Other Current Assets (Policy Text Block)
Prepaid Expenses And Other Current Assets Policy
Property and Equipment
Property, Plant and Equipment, Policy [Policy Text Block]
Goodwill and Other Intangible Assets
Goodwill and Intangible Assets, Policy [Policy Text Block]
Long-Term Receivables
Long Term Receivables [Policy Text Block]
Disclosure of long-term receivables.
Long-Term Inventories
Long Term Inventories [Policy Text Block]
Long term inventories
Other Long-Term Assets
Other Long Term Assets [Policy Text Block]
Other Long-Term Assets
Accrued Expenses
Accrued Expenses [Policy Text Block]
Accrued Expenses, Policy
Revenue Recognition
Revenue Recognition, Policy [Policy Text Block]
Income Taxes
Income Tax, Policy [Policy Text Block]
Stock Option Plans
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]
Net Income (Loss) per Common Share
Earnings Per Share, Policy [Policy Text Block]
Concentration of Credit Risk and Other Risks and Uncertainties
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Recent Accounting Pronouncements
New Accounting Pronouncements, Policy [Policy Text Block]
Reconciliation of the statutory federal income tax rate and the effective income tax rate
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Unrecognized tax benefit activity
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Allowances for accounts receivable
Allowance for Doubtful Accounts Receivable, Current
Common Stock, No Par Value
Common Stock, No Par Value
Common stock, shares authorized
Common Stock, Shares Authorized
Common stock, shares issued
Common Stock, Shares, Issued
Common stock, shares outstanding
Shares, Outstanding
Treasury stock, shares
Treasury Stock, Shares
Document and Entity Information [Abstract]
Document and entity information.
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Document Type
Document Type
Document Period End Date
Document Period End Date
Amendment Flag
Amendment Flag
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Current Fiscal Year End Date
Current Fiscal Year End Date
Entity Filer Category
Entity Filer Category
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Total Assets
Deferred Revenue
Deferred Revenue
Accounts receivable are due, Minimum period
Accounts Receivables Due Minimum Period
Accounts receivables due minimum period.
Accounts receivable are due, Maximum period
Accounts Receivables Due Maximum Period
Accounts receivables due maximum period.
Lease receivable provision write-off
Lease Receivable Provision Write-Off
Lease Receivable Provision Write-Off.
Inventory obsolescence reserve
Inventory Valuation Reserves
Long-term receivables from OTA contracts present value of the future cash flows discounted rate, minimum
Long Term Receivables Present Value Of Future Cash Flows Discounted Rate, Minimum
Long-term receivables present value of future cash flows discounted rate, minimum.
Long-term receivables from OTA contracts present value of the future cash flows discounted rate, maximum
Long Term Receivables Present Value Of Future Cash Flows Discounted Rate, Maximum
Long-term receivables present value of future cash flows discounted rate, maximum.
Deferred financing costs
Deferred Finance Costs, Noncurrent, Net
Deferred financing costs amortized over useful life of debt issue minimum
Deferred Financing costs Amortized Over Useful Life Of Debt Issue Minimum
Deferred Financing costs Amortized Over Useful Life Of Debt Issue Minimum.
Deferred financing costs amortized over useful life of debt issue maximum
Deferred Financing costs Amortized Over Useful Life Of Debt Issue Maximum
Deferred Financing costs Amortized Over Useful Life Of Debt Issue Maximum.
Accrued reorganization costs and contractual commitments
Accrued Reorganization Costs And Contractual Commitments
Accrued Reorganization Costs And Contractual Commitments
Accrued project costs
Accrued Project Costs
Accrued Project Costs
Solar power systems completion period minimum
Solar Power Systems Completion Period Minimum
Solar power systems completion period minimum.
Solar power systems completion period maximum
Solar Power Systems Completion Period Maximum
Solar power systems completion period maximum.
Power purchase agreement product revenue is recognized term
Power Purchase Agreement Product Revenue Recognizable Term
Power purchase agreement product revenue recognizable term.
Deferred tax assets valuation allowance
Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance
Excess tax benefits from stock-based compensation
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities
Length of time of inventory usage considered for inventory reserve
Inventory Reserve, Length of Time of Inventory Usage Considered
Inventory Reserve, Length of Time of Inventory Usage Considered
Warranty Accrual
Product Warranty Accrual, Balance Sheet Classification [Abstract]
Product warranty accrual
Product Warranty Accrual
Operating Loss Carryforwards [Table]
Operating Loss Carryforwards [Table]
Income Tax Authority [Axis]
Income Tax Authority [Axis]
Income Tax Authority [Domain]
Income Tax Authority [Domain]
Domestic Country [Member]
Domestic Tax Authority [Member]
State And Local Jurisdiction [Member]
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards [Line Items]
Income Taxes (Textual) [Abstract]
Income Tax (Textual) [Abstract]
Income tax textual.
Estimated annual effective tax rate
Deferred Taxes, Business Combination, Valuation Allowance, Available to Reduce Income Tax Expense
Deferred Taxes, Business Combination, Valuation Allowance, Available to Reduce Income Tax Expense
Valuation allowance
Valuation Allowance, Deferred Tax Asset, Change in Amount
Operating loss carryforwards
Operating Loss Carryforwards
Exercise of NQSOs
Operating Loss Carryforwards Associated with Exercise of Non Qualified Stock Options
Exercise of non qualified stock options.
Tax credit carryforwards
Tax Credit Carryforward, Amount
Unrecognized tax benefits
Unrecognized Tax Benefits
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Common stock warrants [Member]
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Number of potentially dilutive securities
Antidilutive Shares Excluded From Computation Of Earnings Per Share [Abstract]
Antidilutive Shares excluded from computation of earnings per share.
Total
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Summary of the effect of net income per common share
Numerator:
Earnings Per Share Reconciliation [Abstract]
Net income (loss)
Denominator:
Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract]
Weighted-average effect of assumed conversion of stock options and warrants
Incremental Common Shares Attributable to Share-based Payment Arrangements
Weighted-average common shares outstanding
Net income (loss) per common share:
Earnings Per Share [Abstract]
Basic net income (loss) per share attributable to common shareholders
Diluted net income (loss) per share
Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table]
Schedule of Financing Receivable, Recorded Investment, Credit Quality Indicator [Table]
Credit Quality Indicator [Axis]
Credit Quality Indicator [Axis]
Financing Receivable, by Credit Quality Indicator [Domain]
Financing Receivable, by Credit Quality Indicator [Domain]
Not past due [Member]
Not Past Due [Member]
Not past due.
1-90 days past due [Member]
One To Ninety Days [Member]
One to ninety days.
Greater than 90 days past due [Member]
Greater Than Ninety Days [Member]
Greater than ninety days.
Total past due [Member]
Past Due Lease Net [Member]
Past due lease net.
Total sales-type leases [Member]
Sales Type Net [Member]
Sales type net.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Lease Receivable Provision Write-Off
Credit quality of the Company's financing receivables using Aging Analysis
Accounts, Notes, Loans and Financing Receivable, Classified [Abstract]
Lease balances included in consolidated accounts receivable - current
Accounts, Notes, Loans and Financing Receivable, Net, Current
Lease balances included in consolidated accounts receivable - long-term
Accounts, Notes, Loans and Financing Receivable, Net, Noncurrent
Total gross sales-type leases
Accounts Receivable, Gross, Current
Allowance
Total net sales-type leases
Changes in warranty accrual
Product Warranties Disclosures [Abstract]
Movement in Standard Product Warranty Accrual [Roll Forward]
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning of period
Provision to product cost of revenue
Product Warranty Accrual, Warranties Issued
Charges
Product Warranty Accrual, Payments
End of period
Schedule of Finite-Lived Intangible Assets [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Patents [Member]
Patents [Member]
Licenses [Member]
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount
Finite-Lived and Indefinite-Lived Intangible Assets, Gross
Finite-Lived and Indefinite-Lived Intangible Assets, Gross
Accumulated amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Finite-Lived Intangible Assets, Estimated Amortization Expense
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
For the remaining 3 months of fiscal 2014
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year
Fiscal 2015
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
Fiscal 2016
Finite-Lived Intangible Assets, Amortization Expense, Year Two
Fiscal 2017
Finite-Lived Intangible Assets, Amortization Expense, Year Three
Fiscal 2018
Finite-Lived Intangible Assets, Amortization Expense, Year Four
Fiscal 2019
Finite-Lived Intangible Assets, Amortization Expense, Year Five
Thereafter
Finite-Lived Intangible Assets, Amortization Expense, after Year Five
Total
Finite-Lived Intangible Assets, Net
Goodwill [Roll Forward]
Goodwill [Roll Forward]
Goodwill, beginning of period
Goodwill, acquired during period
Goodwill, Acquired During Period
Goodwill. end of period
Contingent consideration maximum amount of liability
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High
Contingent consideration minimum amount of liability
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low
Contingent consideration, recorded liability
Business Combination, Contingent Consideration, Liability
Business Combination, Contingent Consideration, Liability
Contingent consideration, liability to be recorded
Business Combination, Contingent Consideration, Liability to be Recorded
Business Combination, Contingent Consideration, Liability to be Recorded
Contingent consideration, reduction in liability during period
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability
Subsequent Event [Table]
Subsequent Event [Table]
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Public offering, equity or debt capital amount
Public Offering Amount
Public Offering Amount
Segment reporting information
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Consideration Paid and the Preliminary Fair Value Allocation of the Purchase Price
Schedule of Business Acquisitions, by Acquisition [Table Text Block]
Identifiable Intangible Assets Acquired
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]
Tabular disclosure of finite-lived and indefinite-lived intangible assets acquired as part of a business combination.
Pro Forma Condensed Combined Results of Operations
Business Acquisition, Pro Forma Information [Table Text Block]
Land and land improvements [Member]
Leasehold improvements [Member]
Leasehold Improvements [Member]
Equipment leased to customers under Power Purchase Agreements [Member]
Plant equipment [Member]
Property, Plant and Equipment, Other Types [Member]
Construction in progress [Member]
Construction in Progress [Member]
Property and equipment
Property plant and equipment gross
Property, Plant and Equipment, Gross
Less: accumulated depreciation and amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Net property and equipment
Unrecognized tax benefit activity
Income Tax Expense (Benefit) [Abstract]
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits as of beginning of period
Additions based on tax positions related to the current period positions
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions
Unrecognized tax benefits as of end of period
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Statement of Cash Flows [Abstract]
Operating activities
Net Cash Provided by (Used in) Operating Activities [Abstract]
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation
Depreciation
Amortization of long-term assets
Amortization
Stock-based compensation expense
Share-based Compensation
Accretion of fair value of deferred and contingent purchase price consideration related to acquisition
Accretion Expense
Deferred income tax expense (benefit)
Deferred Income Tax Expense (Benefit)
Loss on sale of property and equipment
Gain (Loss) on Sale of Property Plant Equipment
Provision for bad debts
Provision for Doubtful Accounts
Other
Other Noncash Income (Expense)
Changes in operating assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
Accounts receivable, current and long-term
Increase (Decrease) in Accounts Receivable
Inventories, current and long-term
Increase (Decrease) in Inventories
Deferred contract costs
Increase (Decrease) in Deferred Charges
Prepaid expenses and other assets
Increase (Decrease) in Prepaid Expense and Other Assets
Accounts payable
Increase (Decrease) in Accounts Payable
Accrued expenses
Increase (Decrease) in Accrued Liabilities
Deferred revenue
Increase (Decrease) in Deferred Revenue
Net cash (used in) provided by operating activities
Net Cash Provided by (Used in) Operating Activities
Investing activities
Net Cash Provided by (Used in) Investing Activities [Abstract]
Cash paid for acquisition, net of cash acquired
Payments to Acquire Businesses, Net of Cash Acquired
Purchase of property and equipment
Payments to Acquire Property, Plant, and Equipment
Purchase of short-term investments
Payments to Acquire Short-term Investments
Additions to patents and licenses
Payments to Acquire Intangible Assets
Proceeds from sales of property, plant and equipment
Proceeds from Sale of Property, Plant, and Equipment
Net cash used in investing activities
Net Cash Provided by (Used in) Investing Activities
Financing activities
Net Cash Provided by (Used in) Financing Activities [Abstract]
Payment of long-term debt
Repayments of Long-term Debt
Proceeds from long-term debt
Proceeds from Issuance of Debt
Proceeds from repayment of shareholder notes
Proceeds from Related Party Debt
Repurchase of common stock into treasury
Deferred financing costs
Payments of Financing Costs
Proceeds from issuance of common stock
Proceeds from Issuance of Common Stock
Net cash used in financing activities
Net Cash Provided by (Used in) Financing Activities
Net (decrease) increase in cash and cash equivalents
Cash and Cash Equivalents, Period Increase (Decrease)
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Supplemental cash flow information:
Supplemental Cash Flow Information [Abstract]
Cash paid for interest
Interest Paid
Cash paid for income taxes
Income Taxes Paid
Supplemental disclosure of non-cash investing and financing activities:
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Shares issued from treasury for shareholder note receivable
Other Significant Noncash Transaction, Value of Consideration Given
Shares returned to treasury in satisfaction of receivable
Other Significant Noncash Transaction, Value of Consideration Received
Acquisition related contingent consideration liability
NoncashOrPartNoncashAcquisitionNoncashContingentConsiderationLiability
NoncashOrPartNoncashAcquisitionNoncashContingentConsiderationLiability
Acquisition financed through debt
Noncash or Part Noncash Acquisition, Debt Assumed
Common stock issued for acquisition
NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationIssued
The value of shares issued as [noncash or part noncash] consideration for a business or asset acquired. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.