Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current expense:
Federal	$ 5,465	$ 45,074	$ 29,034
State	(362)	11,174	9,018
Foreign	1,126	3,203	4,256
Total current	6,229	59,451	42,308
Deferred (benefit) expense:
Federal	19,583	9,992	9,547
State	2,735	10,059	577
Foreign			(113)
Total deferred	22,318	20,051	10,011
Total provision	$ 28,547	$ 79,502	$ 52,319