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Share-Based Payment Award, Expiration Period After Date Of Termination Upon Disability Share-Based Compensation Arrangement By Share-Based Payment Award, Expiration Period After Date Of Termination Upon Disability Product and Service [Axis] Product and Service [Axis] Total liabilities Liabilities Net income available to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Other receivables Other Receivables, Net, Current (Less): Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Entity Filer Category Entity Filer Category Stock-based compensation Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Common Stock Common Stock [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Product and Service [Domain] Product and Service [Domain] Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Stock details Schedule of Stock by Class [Table Text 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office and laboratory facility Irvine Office And Facilities Lease [Member] Irvine Office And Facilities Lease Accrued payroll and benefits Increase (Decrease) in Employee Related Liabilities Income Statement [Abstract] Cash, cash equivalents, and restricted cash — beginning of year Cash, cash equivalents, and restricted cash — end of period Cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Service condition period for full vesting Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Operating lease liability, non-current portion Operating Lease, Liability, Noncurrent Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Diluted (usd per share) Net income (loss) per share attributable to common stockholders - diluted (usd per share) Earnings Per Share, 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shares of common stock reserved (in shares) Common Stock, Capital Shares Reserved for Future Issuance Summary of Significant Accounting Policies and Use of Estimates Significant Accounting Policies [Text Block] Cash used in investing activities Net Cash Provided by (Used in) Investing Activities Common stock issued upon conversion of preferred stock (shares) Convertible Preferred Stock, Shares Issued upon Conversion 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 [Domain] Award Type [Domain] Lease term Lessee, Operating Lease, Term of Contract Accounts payable and other accrued liabilities Accounts payable and other accrued liabilities Accounts Payable and Other Accrued Liabilities, Current Accounts payable and other accrued liabilities Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Other assets Schedule of Other Assets [Table 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[Domain] Cash and Cash Equivalents [Domain] Statement of Financial Position [Abstract] Basic EPS Earnings Per Share, Basic [Abstract]