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Income Taxes - (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
subsidiary
Jun. 30, 2020
USD ($)
subsidiary
Income Taxes    
Deferred tax assets $ 0 $ 0
Unrecognized tax benefit interest and penalties expense   0
Unrecognized tax benefits accrued interest and penalties $ 0 $ 0
Number of partially owned subsidiaries | subsidiary 1 1
Federal income tax benefit or expense $ 0 $ 0