Income Taxes (Income Before Income Taxes and Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income (loss) before income tax provision (benefit)
Domestic	$ 26,383	$ (74,402)	$ 54,630
Foreign	(1,584)	(2,171)	1,090
Total	24,799	(76,573)	55,720
Current income tax provision (benefit):
Federal	6,427	2,778	15,392
State	2,185	(472)	1,965
Foreign	1,145	586	1,559
Total current	9,757	2,892	18,916
Deferred income tax provision (benefit):
Federal	(7,472)	(38,829)	(5,490)
State	925	(1,817)	(1,141)
Foreign	(395)	(701)	(1,015)
Total deferred	(6,942)	(41,347)	(7,646)
Income tax provision	$ 2,815	$ (38,455)	$ 11,270