Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Current Federal	$ 25,170	$ 26,296	$ 21,916
Current State	349	(796)	3,731
Current Foreign	931	905	1,768
Current Income Tax Expense (Benefit)	26,450	26,405	27,415
Deferred:
Deferred Federal	5,474	5,256	5,688
Deferred State	(2,682)	(380)	(270)
Deferred Foreign	(1,691)	(559)	(1,245)
Deferred Income Tax Expense (Benefit)	1,101	4,317	4,173
Total Income Tax Expense (Benefit)	$ 27,551	$ 30,722	$ 31,588