Consolidated Statements Of Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements Of Condition [Abstract]
Held to Maturity, Fair Value	$ 10,241	$ 10,703
Common Stock, par value	$ 2.5	$ 2.5
Common Stock, shares authorized	15,000,000	15,000,000
Common Stock, shares outstanding	9,726,814	9,692,312
Treasury Stock, shares	4,005,270	4,002,158