Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current expense:
Federal	$ (2,884)	$ 21,055	$ 12,329
State	3,585	8,676	6,763
Foreign and U.S. territories	5,299	5,550	3,435
Total current expense	6,000	35,281	22,527
Deferred (benefit) expense:
Federal	(43,579)	(1,773)	(30,021)
State	(27,566)	1,278	5,560
Foreign and U.S. territories	(464)	46	1,365
Total deferred (benefit) expense	(71,609)	(449)	(23,096)
Total tax (benefit) expense	$ (65,609)	$ 34,832	$ (569)