Earnings Per Share (Reconciliation Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Earnings Per Share [Abstract]
Net income	$ 3,105	$ 2,773	$ 6,268	$ 5,642
Weighted average common shares outstanding, Basic	3,891,476	3,852,455	3,885,764	3,841,025
Effect of dilutive employee stock options	27,376	20,953	18,763	25,538
Weighted average number of shares outstanding, Diluted	3,918,852	3,873,408	3,904,527	3,866,563
Anti-dilutive options excluded from earnings per share calculation	9,000	131,659	14,000	131,659
Per Common Share Data:
Basic earnings per share	$ 0.80	$ 0.72	$ 1.61	$ 1.47
Diluted earnings per share	$ 0.79	$ 0.72	$ 1.61	$ 1.46