Earnings Per Share (Reconciliations And Calculations Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Earnings Per Share [Abstract]
Net income	$ 4,005	$ 4,181	$ 11,354	$ 10,911
Weighted average common shares outstanding	6,269	6,221	6,252	6,206
Dilutive effect of common stock equivalents	11	10	12	7
Weighted average common and common equivalent shares outstanding	6,280	6,231	6,264	6,213
Basic earnings per common share	$ 0.64	$ 0.67	$ 1.82	$ 1.76
Diluted earnings per common share	$ 0.64	$ 0.67	$ 1.81	$ 1.76