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Income Taxes - Deferred Tax Asset (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred tax assets |  |
Net operating loss carryforward | $ 2,826 | $ 2,416
Capital loss carryover | 976 | 739
GAAP/Tax basis differences | 4,056 | 3,903
Total deferred tax assets | 7,858 | 7,058
Deferred tax liabilities |  |
Deferred tax liabilities | 7 | 6
Valuation allowance | (6,949) | (6,069)
Total net deferred tax asset | $ 902 | $ 983

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