Consolidated Statements of Condition (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Consolidated Statements of Condition [Abstract]
Securities held to maturity, fair value	$ 48,971	$ 10,680	$ 10,758
Loans, net allowance for loan losses	$ 15,993	$ 15,482	$ 15,412
Common Stock, Par Value	$ 2.5	$ 2.5	$ 2.5
Common Stock, Shares Authorized	20,000,000	20,000,000	20,000,000
Common Stock, Shares, Issued	6,023,320	6,008,409	6,003,982
Common Stock, Shares, Outstanding	5,960,720	5,945,809	5,941,382
Treasury Stock, Shares	62,600	62,600	62,600