Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 05, 2020	May 31, 2020	May 29, 2020	May 18, 2020	Dec. 31, 2019	Mar. 31, 2018
Income tax benefit	$ 17,659	$ 17,659
Including a benefit		$ 12,400
Interest rate (as a percent)	9.50%	9.50%
Income tax benefit related to deferred taxes	$ 5,200	$ 5,200
3.75% Convertible Senior Notes
Principal amount	212,463	212,463			$ 12,500	$ 200,000
Interest rate (as a percent)						3.75%
5.5% Convertible Senior Notes
Principal amount	$ 33,660	$ 33,660		$ 1,000		$ 100,000	$ 100,000	$ 100,000
Interest rate (as a percent)			5.50%	5.50%		5.50%		5.50%