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Income Taxes - Deferred Tax Asset (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Deferred tax assets    
Net operating loss carryforward $ 4,582 $ 3,975
Capital loss carryover 4,418 739
GAAP/Tax basis differences 3,841 3,699
Total deferred tax assets 12,841 8,413
Deferred tax liabilities    
Deferred tax liabilities 4 5
Valuation allowance (11,102) (7,029)
Total net deferred tax asset $ 1,735 $ 1,379