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Income Taxes - Deferred Tax Asset (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets |  |
Net operating loss carryforward | $ 6,024 | $ 3,975
Capital loss carryover | 4,442 | 739
GAAP/Tax basis differences | 814 | 3,699
Total deferred tax assets | 11,280 | 8,413
Deferred tax liabilities |  |
Deferred tax liabilities | 2 | 5
Valuation allowance | (9,503) | (7,029)
Total net deferred tax asset | $ 1,775 | $ 1,379

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