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compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Accumulated other comprehensive (loss) income Accumulated Other Comprehensive Income (Loss), Net of Tax Financial Instruments [Domain] Financial Instruments [Domain] Segments [Domain] Segments [Domain] Income Statement Location [Axis] Statement of Income Location, Balance [Axis] Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Vesting of early exercised stock options (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Early Exercises in Period Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Early Exercises in Period Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Inventory Increase (Decrease) in Inventories Inventory Inventory, current Inventory, Net Net Loss Per Share Earnings Per Share, Policy [Policy Text Block] Company Selected Measure Name Company Selected Measure 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[Member] Net Loss Per Share Earnings Per Share [Text Block] Name Outstanding Recovery, Individual Name Additional paid-in capital Additional Paid in Capital Product and Service [Axis] Product and Service [Axis] Cash equivalents: Cash Equivalents, at Carrying Value [Abstract] Total revenue Revenue from contract with customer, excluding assessed tax Revenue from Contract with Customer, Excluding Assessed Tax All Individuals All Individuals [Member] Fair Value Disclosures [Abstract] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Name Forgone Recovery, Individual Name Total current assets Assets, Current Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Marketable securities: Debt Securities, Available-for-Sale, Amortized Cost, after Allowance for Credit Loss [Abstract] 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Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Title of 12(b) Security Title of 12(b) Security Due in one year or less Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost Earnings Per Share [Abstract] Organization and Liquidity Business Description and Basis of Presentation [Text Block] Total other income, net Nonoperating Income (Expense) Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Other Comprehensive Income (Loss) Comprehensive Income, Policy [Policy Text Block] Accrued Liabilities Accounts Payable and Accrued Liabilities Disclosure [Text Block] Less: present value adjustment Lessee, Operating Lease, Liability, Undiscounted Excess Amount Collaborative Arrangement and Arrangement Other than Collaborative [Table] Collaborative Arrangement and Arrangement Other than Collaborative [Table] Award Timing Disclosures [Line Items] Accrued payroll and related expenses Employee-related Liabilities, Current Total undiscounted lease payments Lessee, Operating Lease, Liability, to be Paid Unrealized loss on marketable securities OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Net loss Net loss Net Income (Loss) Attributable to Parent Expiration Date Trading Arrangement Expiration Date Other accrued liabilities Other Accrued Liabilities, Current Property and equipment, net Property, Plant and Equipment, Net Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Preferred stock, authorized (in shares) Preferred Stock, Shares Authorized Adoption Date Trading Arrangement Adoption Date Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Accounts receivable, net Increase (Decrease) in Accounts Receivable Inventory Inventory, Policy [Policy Text Block] Entity Current Reporting Status Entity Current Reporting Status Customer [Axis] Customer [Axis] Selling, General and Administrative Expenses Selling, General and Administrative Expenses, Policy [Policy Text Block] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Loss from operations Loss from operations Operating Income (Loss) Accumulated deficit Accumulated deficit Retained Earnings (Accumulated Deficit) Financial Instrument [Axis] Financial Instrument [Axis] Statement of Financial Position [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Executive Category: Executive 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liability Contract with Customer, Liability Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Leases Lessor, Leases [Policy Text Block] Antidilutive securities excluded from computation of earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount All Adjustments to Compensation All Adjustments to Compensation [Member] Amendment Flag Amendment Flag Accrued interest receivable Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss Termination Date Trading Arrangement Termination Date Net cash provided by financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Measure: Measure [Axis] Raw materials Inventory, Raw Materials, Net of Reserves Evert Schimmelpennink [Member] Evert Schimmelpennink Income taxes, accruals for interest and penalties Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Weighted-average common shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Write-off of nonsalable inventory Inventory Write-down Cost of sales Cost of Product and Service Sold Debt securities, available-for-sale, accrued interest, after allowance for credit loss, statement of financial position [extensible enumeration] Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] CORXEL CORXEL [Member] CORXEL Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Rent expense Operating Lease, Expense Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Gross Unrealized Losses Cash Equivalents, Accumulated 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[Domain] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Reportable Segment Reportable Segment [Member] Reportable Segment Marketable securities Debt Securities, Available-for-Sale, Excluding Accrued Interest, Current Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Operating expenses: Operating Expenses [Abstract] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Statement [Line Items] Statement [Line Items] Statement [Line Items] Asset-backed securities Asset-Backed Securities [Member] Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Cash and cash equivalents Amortized Cost Cash and Cash Equivalent Counterparty Name [Axis] Counterparty Name [Axis] Common Stock Common Stock [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member] Corporate debt securities Corporate Debt Securities [Member] Net (decrease) increase in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Number of reportable segments not disclosed Number Of Reportable Segments Not Disclosed Flag Number Of Reportable Segments Not Disclosed Flag Total inventory Inventory, Current And Noncurrent Inventory, Current And Noncurrent