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Income Taxes - Other (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Taxes    
Increased ownership percentage 50.00%  
Unrecognized tax benefits $ 0 $ 0
Accrued interest or penalties related to uncertain tax positions 0 0
Interest expense or penalties related to uncertain tax positions $ 0 $ 0