Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Loans, allowance for loan losses	$ 2,708	$ 2,921
Preferred stock, no par value	$ 0	$ 0
Preferred stock, authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 1	$ 1
Common stock, authorized	10,000,000	10,000,000
Common stock, issued	5,375,304	5,360,304
Stock held by deferred compensation plan, shares	195,965	197,111
Treasury stock, shares	2,496	9,150