Consolidated Statements of Condition (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Perferred Stock, Liquidation Value Per Share	$ 1,000	$ 1,000
Preferred Stock, Shares Authorized	5,000,000	5,000,000
Common Stock, No Par Value	$ 0	$ 0
Common Stock, Shares Authorized	25,000,000	25,000,000
Common Stock, Shares, Issued	18,477,412	18,477,412
Common Stock, Shares, Outstanding	16,332,327	16,289,832
Treasury Stock, Shares	2,145,085	2,187,580
Series A Preferred Stock [Member]
Preferred Stock, Shares Issued		10,000
Preferred Stock, Shares Outstanding		10,000
Series B Preferred Stock [Member]
Preferred Stock, Shares Issued	11,250
Preferred Stock, Shares Outstanding	11,250