Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal:
Current	$ 54,915	$ 51,342	$ 45,765
Deferred	16,150	(27,103)	17,330
Federal, Total	71,065	24,239	63,095
State:
Current	11,156	9,896	10,710
Deferred	3,017	(5,081)	2,222
State, Total	14,173	4,815	12,932
Current Foreign Tax Expense (Benefit)	3,318	4,035	0
Deferred Foreign Income Tax Expense (Benefit)	(1,103)	(1,214)	0
Foreign Income Tax Expense (Benefit), Continuing Operations	2,215	2,821	0
Income Tax Expense (Benefit), Total	$ 87,453	$ 31,875	$ 76,027