Income Taxes Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Computed Tax Expense at Statutory Rate	$ 10,806	$ 11,144	$ 11,076
Tax-Exempt Income	(2,238)	(2,132)	(2,199)
Nondeductible Interest Expense	80	95	152
State Taxes, Net of Federal Income Tax Benefit	633	814	788
Other Items, Net	(202)	(260)	(103)
Income Tax Expense (Benefit), Continuing Operations	$ 9,079	$ 9,661	$ 9,714