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Income Taxes - Narrative (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($)
Operating loss carryforwards (NOLs) |
Interest and/or penalties incurred | $ 0
Federal |
Operating loss carryforwards (NOLs) |
NOLs, subject to expiration | 128,900,000
NOLs, not subject to expiration | 48,400,000
California Franchise Tax Board |
Operating loss carryforwards (NOLs) |
NOLs | 70,700,000
Capital Loss Carryforward |
Operating loss carryforwards (NOLs) |
Tax credits | 700,000
R&D credits | Federal |
Operating loss carryforwards (NOLs) |
Tax credits | 2,500,000
R&D credits | California Franchise Tax Board |
Operating loss carryforwards (NOLs) |
Tax credits | $ 1,800,000

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