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Income Taxes - Deferred Income Taxes (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets: |  |
Deferred income | $ 3,252 | $ 1,891
Fair market value adjustment | 10,856 | 0
Other | 758 | 149
Tax loss carryforwards | 28,358 | 32,487
Deferred tax assets, gross | 43,224 | 34,527
Valuation allowance | (43,224) | (34,527)
Deferred tax assets, net of valuation allowance | 0 | 0
Net deferred income taxes | $ 0 | $ 0

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