Entity Central Index Key Inventory, Raw Materials and Supplies, Valuation Reserves Inventory, Work in Process, Valuation Reserves Inventory, Finished Goods, Valuation Reserves Lessee operating lease liability payments due after year four. Finite-Lived and Indefinite-Lived Intangible Assets, Gross Cover [Abstract] Document and entity information. Document and entity information. Document And Entity Information [Table] Document And Entity Information [Table] Class of Stock Statement Class Of Stock [Axis] Class of Stock Class Of Stock [Domain] Common stock, no par value Common Stock [Member] Common stock purchase rights. Common stock purchase rights Common Stock Purchase Rights [Member] Document and Entity Information [Line Items] Document And Entity Information [Line Items] Entity Registrant Name Entity Registrant Name 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 Current Reporting Status Entity Current Reporting Status Entity Filer Category Entity Filer Category Entity Shell Company Entity Shell Company Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Entity File Number Entity File Number Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address Address Line1 Entity Address, City or Town Entity Address City Or Town Entity Address, State or Province Entity Address State Or Province Entity Address, Postal Zip Code Entity Address Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Entity Interactive Data Current Entity Interactive Data Current Entity Incorporation, State or Country Code Entity Incorporation State Country Code Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Title of 12(b) Security Security12b Title Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name No Trading Symbol Flag No Trading Symbol Flag Long term debt and capital lease obligations less current maturities. Statement Of Financial Position [Abstract] Assets Assets [Abstract] Cash and cash equivalents Cash And Cash Equivalents At Carrying Value Accounts receivable, net Accounts Receivable Net Current Revenue earned but not billed Unbilled Contracts Receivable Inventories, net Inventory Net 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 Other intangible assets, net Intangible Assets Net Excluding Goodwill Long-term accounts receivable Accounts Receivable Net Noncurrent Other long-term assets Other Assets Noncurrent Total assets Assets Liabilities and Shareholders’ Equity Liabilities And Stockholders Equity [Abstract] Accounts payable Accounts Payable Current Accrued expenses and other Accrued Liabilities Current Deferred revenue, current Contract With Customer Liability Current Current maturities of long-term debt Long Term Debt Current Total current liabilities Liabilities Current Revolving credit facility Long Term Line Of Credit Long-term debt, less current maturities Long Term Debt And Capital Lease Obligations Less Current Maturities Deferred revenue, long-term Contract With Customer Liability Noncurrent Other long-term liabilities Other Liabilities Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments And Contingencies Shareholders’ equity: Stockholders Equity [Abstract] Preferred stock, $0.01 par value: Shares authorized: 30,000,000 at December 31, 2020 and March 31, 2020; no shares issued and outstanding at December 31, 2020 and March 31, 2020 Preferred Stock Value Common stock, no par value: Shares authorized: 200,000,000 at December 31, 2020 and March 31, 2020; shares issued: 40,227,900 at December 31, 2020 and 39,729,569 at March 31, 2020; shares outstanding: 30,759,953 at December 31, 2020 and 30,265,997 at March 31, 2020 Common Stock Value Additional paid-in capital Additional Paid In Capital Common Stock Treasury stock, common shares: 9,467,947 at December 31, 2020 and 9,463,572 at March 31, 2020 Treasury Stock Common Value Retained deficit Retained Earnings Accumulated Deficit Total shareholders’ equity Stockholders Equity Total liabilities and shareholders’ equity Liabilities And Stockholders Equity Preferred stock, par value (USD per share) Preferred Stock Par Or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock Shares Issued Preferred stock, shares outstanding (in shares) Preferred Stock Shares Outstanding Common stock, par value (USD per share) Common Stock No Par Value Common stock, shares authorized (in shares) Common Stock Shares Authorized Common stock, shares issued (in shares) Common Stock Shares Issued Common stock, shares outstanding (in shares) Common Stock Shares Outstanding Treasury stock (in shares) Treasury Stock Common Shares Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service Product Or Service [Axis] Product and Service Products And Services [Domain] Product revenue Product [Member] Service revenue Service [Member] Statement [Line Items] Statement [Line Items] Revenues Revenues Cost of revenue Cost Of Goods And Services Sold Gross profit Gross Profit Operating expenses: Operating Expenses [Abstract] General and administrative General And Administrative Expense Sales and marketing Selling And Marketing Expense Research and development Research And Development Expense Total operating expenses Operating Expenses Income from operations Operating Income Loss Other income (expense): Nonoperating Income Expense [Abstract] Other income Other Nonoperating Income Interest expense Interest Expense Debt Excluding Amortization Amortization of debt issue costs Amortization Of Financing Costs Loss on debt extinguishment Gains Losses On Extinguishment Of Debt Interest income Investment Income Interest Total other expense Nonoperating Income Expense Income before income tax Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax expense Income Tax Expense Benefit Net income Net Income Loss Basic net income 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 per share Earnings Per Share Diluted Weighted-average common shares and share equivalents outstanding Weighted Average Number Of Diluted Shares Outstanding Stock issued during period shares stock options exercised for cash. Stock issued during period value stock options exercised for cash. Statement Of Stockholders Equity [Abstract] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock, Shares Common Stock, Additional Paid-in Capital Common Stock Including Additional Paid In Capital [Member] Treasury Stock Treasury Stock [Member] Retained Deficit Retained Earnings [Member] Shareholders' equity, beginning of period Shareholders' equity, beginning of period (Shares) Shares Outstanding Exercise of stock options for cash Stock Issued During Period Value Stock Options Exercised For Cash Exercise of stock options for cash (shares) Stock Issued During Period Shares Stock Options Exercised For Cash Shares issued under Employee Stock Purchase Plan Stock Issued During Period Value Employee Stock Purchase Plan Shares issued under Employee Stock Purchase Plan (shares) Stock Issued During Period Shares Employee Stock Purchase Plans Stock-based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Stock-based compensation (shares) Stock Issued During Period Shares Restricted Stock Award Gross Employee tax withholdings on stock-based compensation Adjustments Related To Tax Withholding For Share Based Compensation Employee tax withholdings on stock-based compensation (shares) Shares Paid For Tax Withholding For Share Based Compensation Net income (loss) Shareholders' equity, end of period Shareholders' equity, at end of period (shares) Provision for inventory reserves Repayments of long term debt excluding revolving lines of credit. Proceeds from Exercise of Warrants and Stock Options Statement Of Cash Flows [Abstract] Operating activities Net Cash Provided By Used In Operating Activities [Abstract] Net income Profit Loss Adjustments to reconcile net income to net cash (used in) provided by operating activities: Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation Depreciation Amortization of intangible assets Amortization Of Intangible Assets Stock-based compensation Share Based Compensation Amortization of debt issue costs Loss on debt extinguishment Impairment of intangible assets Asset Impairment Charges Loss on sale of property and equipment Gain Loss On Sale Of Property Plant Equipment Provision for inventory reserves Provision For Inventory Reserves 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 Revenue earned but not billed Increase Decrease In Contract With Customer Asset Inventories Increase Decrease In Inventories Prepaid expenses and other assets Increase Decrease In Prepaid Deferred Expense And Other Assets Accounts payable Increase Decrease In Accounts Payable Accrued expenses and other Increase Decrease In Accrued Liabilities Deferred revenue, current and long-term Increase Decrease In Contract With Customer Liability 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] Purchases of property and equipment Payments To Acquire Property Plant And Equipment Additions to patents and licenses Payments To Acquire Intangible Assets 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 Excluding Revolving Lines Of Credit Proceeds from revolving credit facility Proceeds From Long Term Lines Of Credit Payments of revolving credit facility Repayments Of Long Term Lines Of Credit Payments to settle employee tax withholdings on stock-based compensation Payments Related To Tax Withholding For Share Based Compensation Deferred financing costs Payments Of Financing Costs Net proceeds from employee equity exercises Proceeds From Exercise Of Warrants And Stock Options Net cash used in financing activities Net Cash Provided By Used In Financing Activities Net (decrease) increase in cash and cash equivalents Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash and cash equivalents at beginning of period Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash and cash equivalents at end of period Supplemental disclosure of non-cash investing and financing activities: Cash Flow Noncash Investing And Financing Activities Disclosure [Abstract] Operating lease assets obtained in exchange for new operating lease liabilities Right Of Use Asset Obtained In Exchange For Operating Lease Liability Organization Consolidation And Presentation Of Financial Statements [Abstract] DESCRIPTION OF BUSINESS Organization Consolidation And Presentation Of Financial Statements Disclosure [Text Block] Extraordinary And Unusual Items [Abstract] IMPACT OF COVID-19 Unusual Or Infrequent Items Disclosure [Text Block] Accounting Policies [Abstract] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Revenue From Contract With Customer [Abstract] REVENUE Revenue From Contract With Customer [Text Block] Receivables [Abstract] ACCOUNTS RECEIVABLE, NET Loans Notes Trade And Other Receivables Disclosure [Text Block] Inventory Disclosure [Abstract] INVENTORIES, NET Inventory Disclosure [Text Block] Deferred Costs Capitalized Prepaid And Other Assets Disclosure [Abstract] PREPAID EXPENSES AND OTHER CURRENT ASSETS Other Current Assets [Text Block] Property Plant And Equipment [Abstract] PROPERTY AND EQUIPMENT, NET Property Plant And Equipment Disclosure [Text Block] Lessee operating, finance leases and sale leaseback transactions. Leases [Abstract] LEASES Lessee Operating Finance Leases And Sale Leaseback Transactions [Text Block] Goodwill And Intangible Assets Disclosure [Abstract] OTHER INTANGIBLE ASSETS, NET Intangible Assets Disclosure [Text Block] Other Liabilities Disclosure [Abstract] ACCRUED EXPENSES AND OTHER Accounts Payable Accrued Liabilities And Other Liabilities Disclosure Current [Text Block] Earnings Per Share [Abstract] NET INCOME PER COMMON SHARE Earnings Per Share [Text Block] Debt Disclosure [Abstract] LONG-TERM DEBT Long Term Debt [Text Block] Income Tax Disclosure [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] Commitments And Contingencies Disclosure [Abstract] COMMITMENTS AND CONTINGENCIES Commitments And Contingencies Disclosure [Text Block] Stockholders Equity Note [Abstract] SHAREHOLDERS' EQUITY Stockholders Equity Note Disclosure [Text Block] Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] STOCK OPTIONS AND RESTRICTED SHARES Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Segment Reporting [Abstract] SEGMENTS Segment Reporting Disclosure [Text Block] Subsequent Events [Abstract] SUBSEQUENT EVENTS Subsequent Events [Text Block] Principles of Consolidation Consolidation Policy [Text Block] Basis of Presentation Basis Of Accounting Policy Policy [Text Block] Use of Estimates Use Of Estimates Concentration of Credit Risk and Other Risks and Uncertainties Concentration Risk Credit Risk Recent Accounting Pronouncements New Accounting Pronouncements Policy Policy [Text Block] Disaggregation of Revenue Disaggregation Of Revenue Table [Text Block] Summary of Contract Assets and Liabilities Contract With Customer Asset And Liability Table [Text Block] Accounts Receivable and Allowance for Doubtful Accounts Balances Schedule Of Accounts Notes Loans And Financing Receivable [Text Block] Inventories Schedule Of Inventory Current Table [Text Block] Property and Equipment, Net Property Plant And Equipment [Text Block] Summary of assets leased from third parties. Summary of Assets Leased from Third Parties Summary Of Assets Leased From Third Parties Table [Text Block] Summary of Estimated Maturity of Lease Liabilities Lessee Operating Lease Liability Maturity Table [Text Block] Schedule of Revenue and Cost of Sales Arising from Sales-Type Leases Sales Type Lease Lease Income Table [Text Block] Summary of Components and Changes in Other Intangible Assets Schedule Of Finite Lived Intangible Assets Table [Text Block] Summary of Estimated Amortization Expense Finite Lived Intangible Assets Amortization Expense Table [Text Block] Schedule of Accrued Expenses and Other Schedule Of Accrued Liabilities Table [Text Block] Changes in Warranty Accrual Schedule Of Product Warranty Liability Table [Text Block] Summary of the Effect of Net Income Per Common Share Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Summary of Long-Term Debt Schedule Of Debt Table [Text Block] Schedule of ESPP Activity Schedule Of Share Based Compensation Employee Stock Purchase Plan Activity Table [Text Block] Stock-based Compensation Schedule Of Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Text Block] Summary of Stock Options Activity Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Summary of Restricted Shares Granted Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity Table [Text Block] Schedule of Segment Information Schedule Of Segment Reporting Information By Segment [Text Block] Restructuring expense Restructuring Charges Number of Financial Institutions Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Benchmark Concentration Risk By Benchmark [Axis] Concentration Risk Benchmark Concentration Risk Benchmark [Domain] Cost of revenue Cost Of Goods Total [Member] Concentration Risk Type Concentration Risk By Type [Axis] Concentration Risk Type Concentration Risk Type [Domain] Supplier Concentration Risk Supplier Concentration Risk [Member] Customer Major Customers [Axis] Customer Name Of Major Customer [Domain] Customer One [Member] Customer One Customer One [Member] Revenue Sales Revenue Net [Member] Customer Concentration Risk Customer Concentration Risk [Member] Customer two. Customer Two Customer Two [Member] Accounts Receivable Accounts Receivable [Member] Credit Concentration Risk Credit Concentration Risk [Member] Concentration of Credit Risk and Other Risks and Uncertainties Concentration Risk [Line Items] Number of financial institutions Number Of Financial Institutions Number of supplier more than ten percent of cost of revenue. Concentration risk, percentage Concentration Risk Percentage1 Number of supplier more than ten percent of cost of revenue Number Of Supplier More Than Ten Percent Of Cost Of Revenue Number of customer more than ten percent of revenue. Number of customer more than ten percent of revenue Number Of Customer More Than Ten Percent Of Revenue Number of customer more than ten percent of accounts receivable. Number of customer more than ten percent of accounts receivable Number Of Customer More Than Ten Percent Of Accounts Receivable Disaggregation Of Revenue [Table] Disaggregation Of Revenue [Table] Product, Light Fixture Sales-Type Lease [Member] Light fixture sales-type lease Product Light Fixture Sales Type Lease [Member] Product, Sale Of Tax Credit [Member] Sale of tax credits Product Sale Of Tax Credit [Member] Product, Legacy Solar Facilities [Member] Legacy solar facilities Product Legacy Solar Facilities [Member] Disaggregation Of Revenue [Line Items] Disaggregation Of Revenue [Line Items] Total revenue Federal Government [Member] Federal government Federal Government [Member] Commercial And Industrial [Member] Commercial and industrial Commercial And Industrial [Member] Lighting [Member] Total lighting Lighting [Member] Solar Energy [Member] Solar energy related revenues Solar Energy [Member] Total revenues from contracts with customers Revenue From Contract With Customer Including Assessed Tax Revenue accounted for under other guidance Revenue Not From Contract With Customer Total revenue Percentage of contract for sale equals monthly progress payments. Percentage of contract for sale equal monthly progress payments Percentage Of Contract For Sale Equals Monthly Progress Payments Proceeds from sale of unbilled contracts receivable. Gain (loss) on sale of unbilled contract revenue. Proceeds from sale of revenue earned but not billed Proceeds From Sale Of Unbilled Contracts Receivable Gain (loss) on sale of revenue earned but not billed Gain Loss On Sale Of Unbilled Contract Revenue Unbilled receivables. Unbilled accounts receivable Unbilled Receivables Contract liabilities Contract With Customer Liability Cumulative Catch Up Adjustment To Revenue Change In Measure Of Progress Contract assets Contract With Customer Asset Net Contract liabilities Contract With Customer Liability Change in contract with customer liability Change in contract asset reclassified to accounts receivable Contract With Customer Asset Reclassified To Receivable Change in contract liability Change In Contract With Customer Liability Accounts receivable, gross Accounts Receivable Gross Current Allowance for doubtful accounts Allowance For Doubtful Accounts Receivable Current Accounts receivable, net Cost Inventory Gross [Abstract] Raw materials and components Inventory Raw Materials And Supplies Work in process Inventory Work In Process Finished goods Inventory Finished Goods Total Inventory Gross Reserve Inventory Adjustments [Abstract] Raw materials and components Inventory Raw Materials And Supplies Valuation Reserves Work in process Inventory Work In Process Valuation Reserves Finished goods Inventory Finished Goods Valuation Reserves Total Inventory Valuation Reserves Net Inventory Net [Abstract] Raw materials and components Inventory Raw Materials And Supplies Net Of Reserves Work in process Inventory Work In Process Net Of Reserves Finished goods Inventory Finished Goods Net Of Reserves Total Schedule Of Property Plant And Equipment [Table] Schedule Of Property Plant And Equipment [Table] Long-Lived Tangible Asset Property Plant And Equipment By Type [Axis] Long-Lived Tangible Asset Property Plant And Equipment Type [Domain] Land and land improvements Land Improvements [Member] Buildings and building improvements Building And Building Improvements [Member] Furniture, fixtures and office equipment Furniture And Fixtures [Member] Leasehold Improvements Leasehold Improvements [Member] Equipment leased to customers Equipment Leased To Other Party [Member] Plant equipment Equipment [Member] Construction in Progress Construction In Progress [Member] Property Plant And Equipment [Line Items] Property Plant And Equipment [Line Items] Property and equipment Property Plant And Equipment Net [Abstract] Gross property and equipment Property Plant And Equipment Gross Less: accumulated depreciation Accumulated Depreciation Depletion And Amortization Property Plant And Equipment Total property and equipment, net Sale leaseback transaction area of leased property. Sale leaseback transaction lease term. Lessee sale leaseback option to terminate minimum period. Lessee Lease Description [Table] Lessee Lease Description [Table] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] Manitowoc. Manitowoc, WI Manitowoc [Member] Jacksonville. Jacksonville Florida Jacksonville [Member] Lessee Lease Description [Line Items] Lessee Lease Description [Line Items] Area of leased property Sale Leaseback Transaction Area Of Leased Property Lease term of agreement Sale Leaseback Transaction Lease Term Lessee, sale leaseback, option to terminate, minimum period Lessee Sale Leaseback Option To Terminate Minimum Period Lessee, operating lease, option to terminate Lessee Operating Lease Option To Terminate Lessee, operating lease, existence of option to terminate Lessee Operating Lease Existence Of Option To Terminate Area of operating eased property. Area of operating leased property Area Of Operating Leased Property Termination of lease Lease Expiration Date1 Operating lease assets Operating Lease Right Of Use Asset Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease Right Of Use Asset Statement Of Financial Position Extensible List Operating lease liabilities current Operating Lease Liability Current Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease Liability Current Statement Of Financial Position Extensible List Operating lease liabilities non-current Operating Lease Liability Noncurrent Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease Liability Noncurrent Statement Of Financial Position Extensible List Total lease liabilities Operating Lease Liability Operating lease costs Operating Lease Cost Fiscal 2021 (period remaining) Lessee Operating Lease Liability Payments Remainder Of Fiscal Year Fiscal 2022 Lessee Operating Lease Liability Payments Due Next Twelve Months Fiscal 2023 Lessee Operating Lease Liability Payments Due Year Two Fiscal 2024 Lessee Operating Lease Liability Payments Due Year Three Fiscal 2025 Lessee Operating Lease Liability Payments Due Year Four Thereafter Lessee Operating Lease Liability Payments Due After Year Four Total lease payments Lessee Operating Lease Liability Payments Due Less: Interest Lessee Operating Lease Liability Undiscounted Excess Amount Present value of lease liabilities Product revenue Sales Type Lease Revenue Cost of product revenue Cost Of Goods Sold Sales Type Lease Lessor, Operating Lease, Existence of Option to Extend [true false] Lessor Operating Lease Existence Of Option To Extend Schedule Of Finite Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class Finite Lived Intangible Assets By Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name Finite Lived Intangible Assets Major Class Name [Domain] Patents Patents [Member] Licenses Licensing Agreements [Member] Trade name and trademarks (indefinite lived) Trademarks And Trade Names [Member] Customer relationships Customer Relationships [Member] Developed technology Developed Technology Rights [Member] Finite-Lived Intangible Assets [Line Items] Finite Lived Intangible Assets [Line Items] Gross Carrying Amount Finite Lived And Indefinite Lived Intangible Assets Gross Accumulated Amortization Finite Lived Intangible Assets Accumulated Amortization Intangible Assets, Net Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Minimum Minimum [Member] Weighted average Weighted Average [Member] Maximum Maximum [Member] Amortization expense Intangible assets, useful life Finite Lived Intangible Asset Useful Life Finite-Lived Intangible Assets, Estimated Amortization Expense Finite Lived Intangible Assets Future Amortization Expense [Abstract] Fiscal 2021 (period remaining) Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year Fiscal 2022 Finite Lived Intangible Assets Amortization Expense Next Twelve Months Fiscal 2023 Finite Lived Intangible Assets Amortization Expense Year Two Fiscal 2024 Finite Lived Intangible Assets Amortization Expense Year Three Fiscal 2025 Finite Lived Intangible Assets Amortization Expense Year Four Fiscal 2026 Finite Lived Intangible Assets Amortization Expense Year Five Thereafter Finite Lived Intangible Assets Amortization Expense After Year Five Total Finite Lived Intangible Assets Net Accrued project costs current. Contract with customer credit liability current. Compensation and benefits Employee Related Liabilities Current Sales tax Sales And Excise Tax Payable Current Accrued project costs Accrued Project Costs Current Legal and professional fees Accrued Professional Fees Current Warranty Product Warranty Accrual Classified Current Sales returns reserve Contract With Customer Refund Liability Current Credits due to customers Contract With Customer Credit Liability Current Other accruals Other Accrued Liabilities Current Total Limited Product Warranty, Term Product Warranty Liability [Table] Product Warranty Liability [Table] Product Warranty Liability [Line Items] Product Warranty Liability [Line Items] Limited warranty term Limited Product Warranty Term Product warranty accrual payments net of vendor reimbursements. Movement in Standard Product Warranty Accrual Movement In Standard Product Warranty Accrual Roll Forward Beginning of period Product Warranty Accrual Accruals Product Warranty Accrual Period Increase Decrease Warranty claims (net of vendor reimbursements) Product Warranty Accrual Payments Net Of Vendor Reimbursements End of period Numerator: Earnings Per Share Reconciliation [Abstract] Net income (in thousands) Denominator: Weighted Average Number Diluted Shares Outstanding Adjustment [Abstract] Weighted-average common shares outstanding Weighted-average common shares and common share equivalents outstanding Net income per common share: Earnings Per Share Basic And Diluted [Abstract] Basic Diluted Anti-dilutive common shares excluded from the computation of diluted net income per common share Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount Schedule Of Extinguishment Of Debt [Table] Schedule Of Extinguishment Of Debt [Table] Long-term Debt, Type Longterm Debt Type [Axis] Long-term Debt, Type Longterm Debt Type [Domain] Equipment debt obligations Capital Lease Obligations [Member] Credit Facility Credit Facility [Axis] Credit Facility Credit Facility [Domain] Revolving credit facility Revolving Credit Facility [Member] 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 Long Term Debt Noncurrent Line Of Credit Facility [Table] Line Of Credit Facility [Table] Debt Instrument Debt Instrument [Axis] Debt Instrument, Name Debt Instrument Name [Domain] Prior credit agreement. Prior Credit Agreement Prior Credit Agreement [Member] Lender Name Line Of Credit Facility [Axis] Line of Credit Facility, Lender Line Of Credit Facility Lender [Domain] Western Alliance Bank [Member] Western Alliance Bank Western Alliance Bank [Member] Line of credit Line Of Credit [Member] Credit Agreement Credit Agreement Credit Agreement [Member] Bank of America, N.A. Bank Of America N A Bank Of America N A [Member] Extinguishment of Debt Extinguishment Of Debt [Axis] Extinguishment of Debt, Type Extinguishment Of Debt Type [Domain] Debt instrument one member. Debt Instrument 1 Debt Instrument One [Member] Debt instrument two member. Debt Instrument 2 Debt Instrument Two [Member] Line Of Credit Facility [Line Items] Line Of Credit Facility [Line Items] Credit facility, amount Line Of Credit Facility Maximum Borrowing Capacity Credit agreement period Line Of Credit Facility Expiration Period Credit agreement, maturity date Line Of Credit Facility Expiration Date1 Credit agreement, amounts borrowed Line Of Credit Credit agreement, annual facility fee Line Of Credit Facility Commitment Fee Amount Credit agreement, basis points on unused portion of credit facility for fee Line Of Credit Facility Unused Capacity Commitment Fee Percentage Line of credit springing minimum fixed cost coverage ratio. Springing minimum fixed cost coverage ratio covenant amount of excess availability under credit facility. Springing minimum fixed cost coverage ratio covenant percentage of committed facility. Credit agreement, springing minimum fixed cost coverage ratio Line Of Credit Springing Minimum Fixed Cost Coverage Ratio Credit agreement, springing minimum fixed cost coverage ratio covenant amount of excess availability under credit facility Springing Minimum Fixed Cost Coverage Ratio Covenant Amount Of Excess Availability Under Credit Facility Credit agreement, springing minimum fixed cost coverage ratio covenant percentage of committed facility Springing Minimum Fixed Cost Coverage Ratio Covenant Percentage Of Committed Facility Line of credit facility early termination fees. Credit agreement, early termination fees Line Of Credit Facility Early Termination Fees Restricted cash for covering outstanding obligations Restricted Cash Debt maturity month and year. Principal amount of debt Debt Instrument Carrying Amount Stated interest rate, percentage Debt Instrument Interest Rate Stated Percentage Debt maturity month and year Debt Maturity Month And Year Income tax expense Unrecognized tax benefits Unrecognized Tax Benefits Unrecognized tax benefits that would impact effective tax rate Unrecognized Tax Benefits That Would Impact Effective Tax Rate Right issue share price. Rights agreement extended term. Rights agreement extended term Rights Agreement Extended Term Common stock purchased per right Class Of Warrant Or Right Number Of Securities Called By Each Warrant Or Right Right issue share price Right Issue Share Price Minimum subscription percentage. 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 Number of business days to trigger a distribution date Rights Distribution Date Trigger Number Of Business Days After Commencement Or Offer Of Acquisition Acquisition share void percentage. Share acquisition percentage Acquisition Share Void Percentage Share purchase rights redemption price Prior to a person becoming an acquiring person, the board of directors of the company's redemption rate Share Purchase Rights Redemption Price Employee stock purchase plans weighted averages purchase price of shares purchased. Shares issued under ESPP plan Closing market price Employee Stock Purchase Plan Closing Market Price Of Shares Purchased Summary of Issuance of Stock Under Employee Stock Ownership Plan. Summary Of Issuance Of Stock Under Employee Stock Ownership Plan [Abstract] Increase in number of common stock shares available for Issuance. Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] 2016 Omnibus Incentive Plan. 2016 Omnibus Incentive Plan Two Thousand Sixteen Omnibus Incentive Plan [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Reserved shares for issuance to eligible participants (in shares) Common Stock Capital Shares Reserved For Future Issuance Increase in number of common stock shares available for issuance Increase In Number Of Common Stock Shares Available For Issuance 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] Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Cost of products. Cost of product revenue Cost Of Products [Member] Cost Of Services [Member] Cost of service revenue Cost Of Services [Member] General and administrative General And Administrative Expense [Member] Sales and marketing Selling And Marketing Expense [Member] Research and development 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 Allocated Share Based Compensation Expense Share based compensation arrangement by share based payment award equity instruments other than options vested or exercised in period. Award Type Award Type [Axis] Award Type Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Restricted shares Restricted Stock [Member] Restricted Shares Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Roll Forward Beginning balance (shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Awards granted (shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Awards vested or exercised (shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested Or Exercised In Period Awards forfeited (shares) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Ending balance (shares) Per share price on grant date (USD per share) Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Sharebased compensation arrangement by sharebased payment award options vested or exercised number of shares. Stock Options Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares Roll Forward Non-vested, beginning balance (shares) Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Awards granted (shares) Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Awards vested or exercised (shares) Sharebased Compensation Arrangement By Sharebased Payment Award Options Vested Or Exercised Number Of Shares Awards forfeited (shares) Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares Non-vested, ending balance (shares) Per share price on grant date (USD per share) Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Deferred compensation arrangement with individual compensation expense period of recognition. Deferred stock-based compensation related to grants of restricted shares, 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 Schedule Of Segment Reporting Information By Segment [Table] Schedule Of Segment Reporting Information By Segment [Table] Consolidation Items Consolidation Items [Axis] Consolidation Items Consolidation Items [Domain] Operating Segments Operating Segments [Member] Corporate and Other Corporate Non Segment [Member] Segments Statement Business Segments [Axis] Segments Segment [Domain] Engineered Systems Member Orion Engineered Systems Engineered Systems [Member] Distribution Services [Member] Orion Distribution Services Distribution Services [Member] U.S. Markets [Member] Orion U.S. Markets U S Markets [Member] Corporate and Other Segment Reporting Information [Line Items] Operating Income (Loss)