Income Taxes (Income Tax Components) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 31,295	$ 28,581	$ 26,284
State	5,837	5,060	4,910
Foreign	2,048	2,181	1,204
Total Current	39,180	35,822	32,398
Deferred:
Federal	11,520	15,991	4,244
Foreign	(209)	(256)	(84)
Total Deferred	11,311	15,735	4,160
Total	$ 50,491	$ 51,557	$ 36,558