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Income Taxes - Net Deferred Tax Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred tax assets (DTAs): |  |
Net operating loss and tax credit carryforwards | $ 56,516 | $ 35,796
Unrealized mark-to-market, impairments and loss provisions | 10,632 | 3,753
Other realized / unrealized treatment differences | (221) | 12,131
Total deferred tax assets | 66,927 | 51,680
Less: valuation allowance | (66,927) | (51,680)
Net deferred tax assets | $ 0 | $ 0

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