Income Taxes (Components of Income Tax Provision) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:
Federal	$ 15,225	$ 12,072	$ 4,550
State	3,322	1,450	1,211
Foreign	1,432	891	883
Total current	19,979	14,413	6,644
Deferred:
Federal	1,336	(18,836)	1,107
State	(543)	90	111
Total deferred	793	(18,746)	1,218
Income tax expense (benefit)	$ 20,772	$ (4,333)	$ 7,862