Income Taxes, Current and Deferred Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current [Abstract]
Federal	$ 0	$ 0	$ (14,358)
State	2,213	652	1,814
Foreign	79,694	116,303	104,688
Current income tax expense (benefit)	81,907	116,955	92,144
Deferred [Abstract]
Federal	(8,878)	(17,836)	45,593
State	(473)	(1,974)	(2,273)
Foreign	9,063	634	666
Deferred income tax expense (benefit)	(288)	(19,176)	43,986
Provision for income taxes	$ 81,619	$ 97,779	$ 136,130