Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Tax Credit Carryforward [Line Items]
Income tax expense (benefit)	$ (4,425)	$ 33,056	$ (1,184)	$ 61,040
Adjustment out of income tax receivable, noncurrent	0		0				$ (11,349)
Adjustment into income tax receivable, current	$ 24,274		$ 24,274				$ 12,925
Restatement Adjustment
Tax Credit Carryforward [Line Items]
Adjustment out of income tax receivable, noncurrent						$ 11,300
Adjustment into income tax receivable, current						$ 11,300
Forecast
Tax Credit Carryforward [Line Items]
Expected refunds of AMT credits					$ 24,300