Summary Of Significant Accounting Policies - Calculation Of Earnings Per Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Net income	$ 2,681	$ 3,474	$ 3,496	$ 2,674	$ 3,162	$ 4,066	$ 3,142	$ 2,576	$ 12,325	$ 12,946	$ 11,398
Basic weighted average common shares outstanding									6,519	6,477	6,439
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements									91	98	116
Total									6,610	6,575	6,555
Earnings per common share, Basic	$ 0.41	$ 0.53	$ 0.54	$ 0.41	$ 0.49	$ 0.63	$ 0.49	$ 0.40	$ 1.89	$ 2.00	$ 1.77
Earnings per common share, Dilutive	$ 0.40	$ 0.53	$ 0.53	$ 0.41	$ 0.48	$ 0.62	$ 0.48	$ 0.39	$ 1.87	$ 1.97	$ 1.74