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Significant Accounting Policies and Concentrations of Risk (Details) - USD ($) shares in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Significant Accounting Policies and Concentration of Risk [Line Items] |  |  |
Restricted cash | $ 1,798,000 |  | $ 1,804,000
Long-term investment maturity, minimum (in years) | 12 months |  |
Antidilutive securities excluded from computation of earnings per share, amount (in shares) | 45,704 | 55,535 |
Reclassification from accumulated other comprehensive income, current period, before tax | $ 0 | $ 0 |
Computer Equipment |  |  |
Significant Accounting Policies and Concentration of Risk [Line Items] |  |  |
Property, plant and equipment, useful life (in years) | 3 years |  |
Laboratory Equipment, Office Equipment and Software |  |  |
Significant Accounting Policies and Concentration of Risk [Line Items] |  |  |
Property, plant and equipment, useful life (in years) | 5 years |  |
Furniture and Fixtures |  |  |
Significant Accounting Policies and Concentration of Risk [Line Items] |  |  |
Property, plant and equipment, useful life (in years) | 5 years |  |
Maximum |  |  |
Significant Accounting Policies and Concentration of Risk [Line Items] |  |  |
Maturity period of high quality marketable securities (in years) | 3 years |  |
Average maturity period of high quality marketable securities (in months) | 12 months |  |
Maturity period of short term investment (in months) | 12 months |  |
Collateral for Credit |  |  |
Significant Accounting Policies and Concentration of Risk [Line Items] |  |  |
Restricted cash | $ 1,501,000 |  | $ 1,493,000

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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