Accounting Policies [Abstract] Revenue, Initial Application Period Cumulative Effect Transition [Table] Revenue, Initial Application Period Cumulative Effect Transition [Table] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Axis] Initial Application Period Cumulative Effect Transition [Domain] Initial Application Period Cumulative Effect Transition [Domain] Adjustments Difference between Revenue Guidance in Effect before and after Topic 606 [Member] As Reported Calculated under Revenue Guidance in Effect before Topic 606 [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [Member] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Revenue, Initial Application Period Cumulative Effect Transition [Line Items] Assets Assets [Abstract] Current assets held for sale Disposal Group, Including Discontinued Operation, Assets, Current Liabilities: Liabilities [Abstract] Contract liabilities Contract with Customer, Liability Current liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities, Current Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Accumulated deficit Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Technology development Technology Development [Member] Technology Development [Member] Products and licensing Products And Licensing [Member] Products And Licensing [Member] Balances without adoption of Topic 606 Revenues: Revenues [Abstract] Total revenues Revenue from Contract with Customer, Excluding Assessed Tax Cost of revenues: Cost of Revenue [Abstract] Total cost of revenues Cost of Goods and Services Sold Gross profit Gross Profit Operating expense: Operating Expenses [Abstract] Selling, general and administrative Selling, General and Administrative Expense Research, development and engineering Research and Development Expense Total operating expense Operating Expenses Operating income/(loss) Operating Income (Loss) Other income/(expense): Nonoperating Income (Expense) [Abstract] Investment income Investment Income, Nonoperating Other income/(expense) Other Nonoperating Income (Expense) Interest expense Interest Income (Expense), Nonoperating, Net Total other income/(expense) Nonoperating Income (Expense) Income/(loss) from continuing operations before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income tax benefit Income Tax Expense (Benefit) Net income/(loss) from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Discontinued Operations and Disposal Groups [Abstract] Net revenues Disposal Group, Including Discontinued Operation, Revenue Cost of revenues Disposal Group, Including Discontinued Operation, Costs of Goods Sold Operating expenses Disposal Group, Including Discontinued Operation, Operating Expense Other (expenses)/income Disposal Group, Including Discontinued Operation, Other Expense Other (expenses)/income Disposal Group, Including Discontinued Operation, Other Income Income before income taxes Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax Allocated tax expense/(benefit) Discontinued Operation, Tax Effect of Income (Loss) from Discontinued Operation During Phase-out Period Operating (loss)/income from discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax Gain on sale, net of related income taxes Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Net income from discontinued operations Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Inventory Disclosure [Abstract] Inventory Inventory Disclosure [Text Block] Equity [Abstract] Authorized share repurchase amount Stock Repurchase Program, Authorized Amount Treasury shares repurchased (in shares) Treasury Stock, Shares, Acquired Amount of stock repurchased Treasury Stock, Value, Acquired, Cost Method Segment Reporting [Abstract] Reconciliation of Assets from Segment to Consolidated [Table] Reconciliation of Assets from Segment to Consolidated [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Technology development Technology Development Segment [Member] Technology Development Segment [Member] Products and licensing Product And Licensing Segment [Member] Product and Licensing Segment [Member] Segment Reporting, Asset Reconciling Item [Line Items] Segment Reporting, Asset Reconciling Item [Line Items] Total segment assets: Total assets Assets Property plant and equipment, and intangible assets Property, Plant and Equipment, Net Debt Disclosure [Abstract] Debt Debt Disclosure [Text Block] Number of Unvested Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeitures (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Ending balance (in shares) Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Beginning balance (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeitures (in usd per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Ending balance (in usd per share) Aggregate Value of Unvested Shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value [Abstract] Aggregate value of shares, Beginning balance Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding Aggregate value of shares, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Aggregate Intrinsic Value, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Aggregate Intrinsic Value, Granted Aggregate value of shares, Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested Aggregate value of shares, Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Aggregate Intrinsic Value, Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Aggregate Intrinsic Value, Forfeited Aggregate value of shares, Ending balance Commitments and Contingencies Disclosure [Abstract] Contingencies and Guarantees Commitments and Contingencies Disclosure [Text Block] Components of Inventory Schedule of Inventory, Current [Table Text Block] 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] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Employee Director Compensation Plan Employee Director Compensation Plan [Member] Employee Director Compensation Plan [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Number of Stock Units Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Beginning balance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted Forfeitures (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures Converted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Other Ending balance (in shares) Converted (in usd per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Converted, Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Converted, Weighted Average Grant Date Fair Value Intrinsic value, outstanding Revenue from Contract with Customer [Abstract] Contract Assets Change In Contract With Customer, Asset [Roll Forward] Change in Contract with Customer, Asset [Roll Forward] Opening Balance as of January 1, 2018 Contract with Customer, Asset, Net Transferred to receivables from contract assets recognized at the beginning of the period Contract with Customer, Asset, Reclassified to Receivable Increases as a result of cumulative catch-up adjustment arising from changes in the estimate of the stage of completion Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress Balance as of September 30, 2018 Contract Liabilities Change In Contract With Customer, Liability [Roll Forward] Change In Contract With Customer, Liability [Roll Forward] Opening Balance as of January 1, 2018 Revenue recognized that was included in the contract liabilities balance at the beginning of the period Contract with Customer, Liability, Revenue Recognized Transferred to payables from contract liabilities recognized at the beginning of the period Contract With Customer, Liability, Reclassified To Payable Contract With Customer, Liability, Reclassified To Payable Increases due to cash received or adjustment of estimates, excluding amounts recognized as revenue during the period Contract with Customer, Liability, Cumulative Catch-up Adjustment to Revenue, Change in Estimate of Transaction Price Balance as of September 30, 2018 Accounts receivable, net Accounts Receivable, Net, Current Contract assets Contract with Customer, Asset, Net, Current Current assets held for sale Disposal Group, Including Discontinued Operation, Assets, Including Revenue From Custom Products Segment, Current Disposal Group, Including Discontinued Operation, Assets, Including Revenue From Custom Products Segment, Current Long-term contract assets Contract with Customer, Asset, Net, Noncurrent Accrued liabilities Accrued Liabilities, Current Contract liabilities Contract with Customer, Liability, Current Current liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities, Including Revenue From Custom Products Segment, Current Disposal Group, Including Discontinued Operation, Liabilities, Including Revenue From Custom Products Segment, Current Deferred revenue Deferred Credits and Other Liabilities 2018 (remaining three months) Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2019 Long-term Debt, Maturities, Repayments of Principal in Year Two Silicon Valley Bank Term Loan Long-term Debt Income Statement [Abstract] Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] (Loss)/income from discontinued operations, net of income tax of $216,813, $(91,705), $235,312, and $249,184 Gain on sale, net of income taxes of $1,866,232 and $1,508,373 Net income Net Income (Loss) Attributable to Parent Preferred stock dividend Preferred Stock Dividends, Income Statement Impact Net income attributable to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Net income/(loss) per share from continuing operations: Earnings Per Share, Basic and Diluted [Abstract] Basic (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Diluted (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Net income per share from discontinued operations: Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic and Diluted Share [Abstract] Basic (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Diluted (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Net income per share attributable to common stockholders: Earnings Per Share [Abstract] Basic (in dollars per share) Earnings Per Share, Basic Diluted (in dollars per share) Earnings Per Share, Diluted Weighted average common shares and common equivalent shares outstanding: Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Income Tax Disclosure [Abstract] Income Taxes Income Tax Disclosure [Text Block] Current assets: Assets, Current [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Receivable from sale of HSOR business Nontrade Receivables, Current Inventory Inventory, Net Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Total current assets Assets, Current Property and equipment, net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets, Noncurrent Total assets Liabilities and stockholders’ equity Liabilities and Equity [Abstract] Current liabilities: Liabilities, Current [Abstract] Current portion of long-term debt obligations Long-term Debt, Current Maturities Current portion of capital lease obligations Capital Lease Obligations, Current Accounts payable Accounts Payable, Current Total current liabilities Liabilities, Current Long-term deferred rent Deferred Rent Credit, Noncurrent Long-term capital lease obligations Capital Lease Obligations, Noncurrent Total liabilities Liabilities Commitments and contingencies Commitments and Contingencies Preferred stock, par value $0.001, 1,321,514 shares authorized, issued and outstanding at September 30, 2018 and December 31, 2017, respectively Preferred Stock, Value, Issued Common stock, par value $0.001, 100,000,000 shares authorized, 29,189,506 and 28,354,822 shares issued, 27,936,401 and 27,283,918 shares outstanding at September 30, 2018 and December 31, 2017, respectively Common Stock, Value, Issued Treasury stock at cost, 1,253,105 and 1,070,904 shares at September 30, 2018 and December 31, 2017, respectively Treasury Stock, Value Additional paid-in capital Additional Paid in Capital Total stockholders’ equity Stockholders' Equity Attributable to Parent Total liabilities and stockholders’ equity Liabilities and Equity Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, issued (in shares) Preferred Stock, Shares Issued Preferred stock, outstanding (in shares) Preferred Stock, Shares Outstanding Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, authorized (in shares) Common Stock, Shares Authorized Common stock, issued (in shares) Common Stock, Shares, Issued Common stock, outstanding (in shares) Common Stock, Shares, Outstanding Treasury Stock (in shares) Treasury Stock, Shares Subsequent Events [Abstract] Subsequent Event Subsequent Events [Text Block] Schedule of Revenues, Operating Income (Loss) and Assets for Reportable Segments Schedule of Segment Reporting Information, by Segment [Table Text Block] Basis of Presentation and Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Schedule of Significant Changes in Contract Balances Contract with Customer, Asset and Liability [Table Text Block] Nature of Operations Nature Of Operations [Policy Text Block] Nature Of Operations Unaudited Interim Financial Information Basis of Accounting, Policy [Policy Text Block] Reclassifications Reclassification, Policy [Policy Text Block] Fair Value Measurements Fair Value of Financial Instruments, Policy [Policy Text Block] Net Income/(Loss) Per Share Earnings Per Share, Policy [Policy Text Block] Recently Issued Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Number of reportable segments Number of Reportable Segments Common stock equivalents included in diluted per share data (in shares) Weighted Average Number Diluted Shares Outstanding Adjustment New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Scenario [Axis] Scenario [Axis] Scenario, Unspecified [Domain] Scenario, Unspecified [Domain] Forecast Scenario, Forecast [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Cumulative adjustment to decrease accumulated deficit Cumulative Effect on Retained Earnings, Net of Tax Deferred revenue Revenue, Remaining Performance Obligation, Amount Performance obligation, percentage Revenue, Remaining Performance Obligation, Percentage Silicon Valley Bank Term Loan Less: unamortized debt issuance costs Unamortized Debt Issuance Expense Less: current portion Long-term debt obligations Long-term Debt, Excluding Current Maturities Contract Balances Revenue from Contract with Customer [Text Block] Statement of Cash Flows [Abstract] Cash flows (used in)/provided by operating activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to reconcile net income to net cash (used in)/provided by operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Share-based compensation Share-based Compensation Bad debt expense Provision for Doubtful Accounts (Gain)/loss on disposal of fixed assets Gain (Loss) on Disposition of Property Plant Equipment Gain on sale of discontinued operations Change in assets and liabilities Increase (Decrease) in Operating Capital [Abstract] Accounts receivable Increase (Decrease) in Accounts Receivable Contract assets Increase (Decrease) in Contract with Customer, Asset Inventory Increase (Decrease) in Inventories Other current assets Increase (Decrease) in Other Current Assets Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Contract liabilities Increase (Decrease) in Contract with Customer, Liability Deferred revenue Increase (Decrease) in Deferred Liabilities Net cash (used in)/provided by operating activities Net Cash Provided by (Used in) Operating Activities Cash flows provided by investing activities Net Cash Provided by (Used in) Investing Activities [Abstract] Acquisition of property and equipment Payments to Acquire Property, Plant, and Equipment Intangible property costs Payments to Acquire Intangible Assets Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Proceeds from sales of discontinued operations Proceeds from Divestiture of Businesses Net cash provided by investing activities Net Cash Provided by (Used in) Investing Activities Cash flows used in financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Payments on capital lease obligations Repayments of Long-term Capital Lease Obligations Payments of debt obligations Repayments of Debt Repurchase of common stock Payments for Repurchase of Common Stock Proceeds from the exercise of options and warrants Proceeds from Issuance or Sale of Equity Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Net increase in cash and cash equivalents Cash and Cash Equivalents, Period Increase (Decrease) Cash and cash equivalents—beginning of period Cash and cash equivalents—end of period Supplemental disclosure of cash flow information Supplemental Cash Flow Information [Abstract] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activities Cash paid for income taxes Income Taxes Paid Non-cash investing and financing activities Noncash Investing and Financing Items [Abstract] Dividend on preferred stock, 59,469 shares of common stock issuable Dividend On Preferred Stock, Value Of Common Stock Issuable Dividend On Preferred Stock, Value Of Common Stock Issuable Options Outstanding, Number of Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Beginning Balance (shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Canceled (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period Ending Balance (shares) Price per Share Range Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Abstract] Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding, lower limit (in dollars per share) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit Outstanding, upper limit (in dollars per share) Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit Granted, lower limit (in dollars per share) Share Based Compensation, Shares Authorized Under Stock Option Plans, Granted Price Range, Lower Range Limit Share Based Compensation, Shares Authorized Under Stock Option Plans, Granted Price Range, Lower Range Limit Granted, upper limit (in dollars per share) Share Based Compensation, Shares Authorized Under Stock Option Plans, Granted Price Range, Upper Range Limit Share Based Compensation, Shares Authorized Under Stock Option Plans, Granted Price Range, Upper Range Limit Exercised, lower limit (in dollars per share) Share Based Compensation, Shares Authorized Under Stock Option Plans, Exercised Price Range, Lower Range Limit Share Based Compensation, Shares Authorized Under Stock Option Plans, Exercised Price Range, Lower Range Limit Exercised, upper limit (in dollars per share) Share Based Compensation, Shares Authorized Under Stock Option Plans, Exercised Price Range, Upper Range Limit Share Based Compensation, Shares Authorized Under Stock Option Plans, Exercised Price Range, Upper Range Limit Canceled, lower limit (in dollars per share) Share Based Compensation, Shares Authorized Under Stock Option Plans, Forfeitures Price Range, Lower Range Limit Share Based Compensation, Shares Authorized under Stock Option Plans, Forfeitures Price Range, Lower Range Limit Canceled, upper limit (in dollars per share) Share Based Compensation, Shares Authorized Under Stock Option Plans, Forfeitures Price Range, Upper Range Limit Share Based Compensation, Shares Authorized under Stock Option Plans, Forfeitures Price Range, Upper Range Limit Options Outstanding, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Beginning Balance (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, 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 Canceled (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price Ending Balance (in dollars per share) Additional Disclosures Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Options Outstanding, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value Options Exercisable, Number of Shares (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Options Exercisable, Weighted Average Exercise Price (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Options Exercisable, Aggregate Intrinsic Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Components of Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Statement of Financial Position [Abstract] Payables and Accruals [Abstract] Accrued Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Loss Contingencies [Table] Loss Contingencies [Table] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Disposed of by Sale Discontinued Operations, Disposed of by Sale [Member] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] High Speed Optical Receivers Business High Speed Optical Receivers Business [Member] High Speed Optical Receivers Business [Member] Optoelectronic Components and Subassemblies Optoelectronic Components And Subassemblies [Member] Optoelectronic Components And Subassemblies [Member] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Macom Macom Technology Solutions, Inc. [Member] Macom Technology Solutions, Inc. [Member] Purchase Commitment, Excluding Long-term Commitment [Axis] Purchase Commitment, Excluding Long-term Commitment [Axis] Purchase Commitment, Excluding Long-term Commitment [Domain] Purchase Commitment, Excluding Long-term Commitment [Domain] Tunable Lasers Tunable Lasers [Member] Tunable Lasers [Member] Loss Contingencies [Line Items] Loss Contingencies [Line Items] Escrow deposits related to indemnity claims Disposal Group, Including Discontinued Operation, Consideration, Escrow Disposal Group, Including Discontinued Operation, Consideration, Escrow Accounts receivable Accounts Receivable, Net Contingent consideration on discontinued operation Disposal Group, Including Discontinued Operation, Contingent Consideration Disposal Group, Including Discontinued Operation, Contingent Consideration Non-cancelable purchase order delivery period Significant Purchase Commitment Time Period Significant Purchase Commitment, Time Period Non-cancelable purchase order commitment Contractual Obligation Non-cancelable purchase order commitment remaining Purchase Commitment, Remaining Minimum Amount Committed Gain on sale, related income taxes Discontinued Operation, Tax Effect of Gain (Loss) from Disposal of Discontinued Operation Document And Entity Information [Abstract] Document And Entity Information [Abstract] Document Type Document Type Amendment Flag Amendment Flag Document Period End Date Document Period End Date Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Trading Symbol Trading Symbol Entity Registrant Name Entity Registrant Name Entity Central Index Key Entity Central Index Key Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Emerging Growth Company Entity Emerging Growth Company Entity Small Business Entity Small Business Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Product Concentration Risk Product Concentration Risk [Member] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Revenues Sales Revenue, Net [Member] Cost of Revenues Cost of Goods, Total [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Initial purchase price Disposal Group, Including Discontinued Operation, Consideration, Gross Disposal Group, Including Discontinued Operation, Consideration, Gross Placed in escrow Concentration risk Concentration Risk, Percentage Initial purchase price Disposal Group, Including Discontinued Operation, Consideration Cash flows used in operating activities for discontinued operations Cash Provided by (Used in) Operating Activities, Discontinued Operations Cash flows used in investing activities for discontinued operations Cash Provided by (Used in) Investing Activities, Discontinued Operations Accrued compensation Employee-related Liabilities, Current Income tax payable Accrued Income Taxes, Current Accrued professional fees Accrued Professional Fees, Current Deferred rent Accrued Rent, Current Royalties Accrued Royalties, Current Accrued interest Interest Payable, Current Accrued liabilities - other Other Accrued Liabilities, Current Total accrued liabilities Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Restatement [Axis] Restatement [Axis] Restatement [Domain] Restatement [Domain] Scenario, Previously Reported Previously Reported [Member] Restatement Adjustment Restatement Adjustment [Member] Equity Components [Axis] Equity Component [Domain] Preferred Stock Preferred Stock [Member] Common Stock Common Stock [Member] Treasury Stock Treasury Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Accumulated Deficit Retained Earnings [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Carilion Clinic Carilion Clinic [Member] Carilion Clinic [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Series A Preferred Stock Series A Preferred Stock [Member] Class of Stock [Line Items] Class of Stock [Line Items] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Preferred stock beginning balance (in shares) Common stock beginning balance (in shares) Treasury stock beginning balance (in shares) Stockholder's equity beginning balance Impact of change in accounting policy, Preferred stock balance (in shares) Impact of change in accounting policy, Common stock balance (in shares) Impact of change in accounting policy, Treasury stock balance (in shares) Impact of change in accounting policy, Stockholder's equity adjusted balance Exercise of stock options (in shares) Exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Share-based compensation (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Share-based compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Non-cash compensation (in shares) Stock Issued During Period, Shares, Share-based Compensation, Gross Non-cash compensation Stock Issued During Period, Value, Restricted Stock Award, Gross Stock dividends to Carilion Clinic (in shares) Stock Dividends, Shares Stock dividends to Carilion Clinic Stock Issued During Period, Value, Stock Dividend Net Income Purchase of treasury stock (in shares) Purchase of treasury stock Stock Repurchased During Period, Value Preferred stock ending balance (in shares) Common stock ending balance (in shares) Treasury stock ending balance (in shares) Stockholder's equity ending balance Accrued dividends Dividends Payable Stock dividends for preferred shareholders (in shares) Dividends Preferred Stock, Shares The dividends on the preferred stock are paid in common stock shares. Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Total operating income (loss) Depreciation Depreciation Amortization Amortization of Intangible Assets Capital Stock and Share-Based Compensation Stockholders' Equity Note Disclosure [Text Block] Summary of Stock Option Activity Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of Restricted Stock Awards and Units Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] Details of Equity Transactions Schedule of Stockholders Equity [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Term Loan One Term Loan One [Member] Term Loan One [Member] Term Loan Two Term Loan Two [Member] Term Loan Two [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Term Loan Medium-term Notes [Member] Lender Name [Axis] Lender Name [Axis] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Silicon Valley Bank Silicon Valley Bank [Member] Silicon Valley Bank [Member] Loan Restructuring Modification Name [Axis] Loan Restructuring Modification Name [Axis] Loan Restructuring Modification Name [Domain] Loan Restructuring Modification Name [Domain] Sixth Loan Modification Agreement Sixth Loan Modification Agreement [Member] Sixth Loan Modification Agreement [Member] Seventh Loan Modification Agreement Seventh Loan Modification Agreement [Member] Seventh Loan Modification Agreement [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Prime Rate Prime Rate [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt, face amount Debt Instrument, Face Amount Debt, number of monthly payment Debt Instrument Number Of Periodic Payment Debt Instrument, Number of Periodic Payment Debt, monthly principal payments Debt Instrument, Periodic Payment, Principal Debt, additional interest above prime rate Debt Instrument, Basis Spread on Variable Rate Early termination fee Debt Instrument, Early Termination Fee, Percentage Debt Instrument, Early Termination Fee, Percentage Minimum cash balance Debt Instrument, Restrictive Covenant, Minimum Cash Balance Debt Instrument, Restrictive Covenant, Minimum Cash Balance Liquidity covenant component, accounts receivable percentage Debt Instrument, Covenant Terms, Liquidity Covenant, Accounts Receivable Component, Percentage Debt Instrument, Covenant Terms, Liquidity Covenant Component, Accounts Receivable, Percentage Liquidity covenant component, outstanding principal loan balance multiplier Debt Instrument, Covenant Terms, Liquidity Covenant Component, Outstanding Principal Loan Balance Multiplier Debt Instrument, Covenant Terms, Liquidity Covenant Component, Outstanding Principal Loan Balance Multiplier Aggregate term loan balance Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Sale price Less: transition services payments Disposal Group, Including Discontinued Operation, Transition Cost, Total Accrual Disposal Group, Including Discontinued Operation, Transition Cost, Total Accrual Adjusted purchase price Assets held for sale Disposal Group, Including Discontinued Operation, Assets Liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities Transaction costs Disposal Group, Including Discontinued Operation, Transaction Cost Disposal Group, Including Discontinued Operation, Transaction Cost Income tax expense Number of operating segments Number of Operating Segments Discontinued Operations Discontinued Operations [Member] Revenues Sales [Member] Government Contracts Concentration Risk Government Contracts Concentration Risk [Member] Geographic Concentration Risk Geographic Concentration Risk [Member] Customer [Axis] Customer [Axis] Customer [Domain] Customer [Domain] U.S. Government United States Government [Member] United States Government [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Outside of the United States Non-US [Member] Percentage of total consolidated revenues by customer Operating Segments Segment Reporting Disclosure [Text Block] Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Dividend on preferred stock, shares of common stock issuable (in shares) Dividend On Preferred Stock, Shares Of Common Stock Issuable Dividend On Preferred Stock, Shares Of Common Stock Issuable Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Micron Optics, Inc. Micron Optics, Inc. [Member] Micron Optics, Inc. [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Cash consideration Payments to Acquire Businesses, Gross Cash paid at closing Payments To Acquire Businesses, Gross, Paid At Closing Payments To Acquire Businesses, Gross Paid At Closing Amount at closing placed in escrow Payments To Acquire Businesses, Gross, Placed In Escrow Payments To Acquire Businesses, Gross, Placed In Escrow Expected dividend yield Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Aggregate outstanding stock options (in shares) Outstanding stock options, weighted average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Exercisable stock options (in shares) Exercisable stock options, weighted average remaining contractual term Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Fair value of shares vested Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Fair value of options exercised during period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Stock-based compensation expense not yet recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Weighted average remaining service period Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition Range [Axis] Range [Axis] Range [Domain] Range [Domain] Maximum Maximum [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Employees Employees [Member] Employees [Member] Directors Director [Member] Shares issued (in shares) Shares vested (in shares) Vesting period, earlier of grant anniversary, or annual stockholders' meeting Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Shares not yet vested (in shares) Finished goods Inventory, Finished Goods, Net of Reserves Work-in-process Inventory, Work in Process, Net of Reserves Raw materials Inventory, Raw Materials, Net of Reserves Total inventory Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] United States UNITED STATES Asia Asia [Member] Europe Europe [Member] Canada, Central and South America Canada, Central, And South America [Member] Canada, Central, And South America [Member] All Others Other Countries [Member] Other Countries [Member] Sales to the U.S. government U.S. direct commercial sales and other United States Direct Commercial Sales And Other [Member] United States Direct Commercial Sales And Other [Member] Foreign commercial sales & other Foreign Commercial Sales And Other [Member] Foreign Commercial Sales And Other [Member] Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Axis] Contract with Customer, Basis of Pricing [Domain] Contract with Customer, Basis of Pricing [Domain] Fixed-price contracts Fixed-price Contract [Member] Cost-type contracts Cost-Type Contract [Member] Cost-Type Contract [Member] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Goods transferred at a point in time Transferred at Point in Time [Member] Goods/services transferred over time Transferred over Time [Member] Technology Development Products And Services, Technology Development [Member] Products And Services, Technology Development [Member] Optical Test and Measurement Systems Products And Services, Optical Test And Measurement Systems [Member] Products And Services, Optical Test And Measurement Systems [Member] Other Products And Services, Other [Member] Products And Services, Other [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Accounts receivable, net Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Inventory Disposal Group, Including Discontinued Operation, Inventory, Current Prepaid expenses and other assets Disposal Group, Including Discontinued Operation, Prepaid and Other Assets, Current Total current assets Property and equipment, net Disposal Group, Including Discontinued Operation, Property, Plant and Equipment, Noncurrent Intangible assets, net Disposal Group, Including Discontinued Operation, Intangible Assets, Noncurrent Goodwill Disposal Group, Including Discontinued Operation, Goodwill, Noncurrent Other assets Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent Total non-current assets Disposal Group, Including Discontinued Operation, Assets, Noncurrent Total assets held for sale Accounts payable Disposal Group, Including Discontinued Operation, Accounts Payable, Current Accrued liabilities Disposal Group, Including Discontinued Operation, Accrued Liabilities, Current Total current liabilities Total liabilities held for sale Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Schedules of Impacts of Adopting Topic 606 Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] Summary of Debt Outstanding Schedule of Debt [Table Text Block] Schedule of Remaining Principal Payments Under the Term Loan Schedule of Maturities of Long-term Debt [Table Text Block] Non-current assets held for sale