Income Taxes (Components Of Income Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal
Current	$ 30,266	$ 9,340	$ 31,390
Deferred	(14,970)	6,238	20,518
Total	15,296	15,578	51,908
State
Current	5,234	2,079	2,934
Deferred	(577)	742	(907)
Total	4,657	2,821	2,027
Total, Current	35,500	11,419	34,324
Total, Deferred	(15,547)	6,980	19,611
Total	$ 19,953	$ 18,399	$ 53,935