Income Taxes (Income Tax Expense from Cont. Ops) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Current:
Federal	$ 15,313	$ 11,643	$ 10,959
State	4,971	3,534	3,263
Deferred:
Federal	19,135	17,693	16,422
State	3,208	2,384	2,347
Income Tax Expense (Benefit), Total	$ 42,627	$ 35,254	$ 32,991