Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Taxes
Income tax benefit	$ (508)	$ (2,539)	$ (3,875)	$ (6,580)
Effective tax rate (as a percent)			11.90%	27.30%
Tax benefit based on estimated effective tax rate for the full year				$ 3,884
Income tax benefit, Tax windfall				$ (2,186)