Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Assets
Cash and due from banks, reserves	$ 5,743	$ 7,990
Securities available-for-sale, at cost	354,671	355,496
Securities held-to-maturity, at fair value	$ 98,033	$ 101,131
Shareholders' equity
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, authorized (in shares)	30,000,000	30,000,000
Common stock, issued (in shares)	10,615,983	10,465,506
Common stock, outstanding (in shares)	10,615,983	10,465,506
Treasury stock (in shares)	150,477	150,477
Preferred Stock Series B [Member]
Shareholders' equity
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, authorized (in shares)	5,000,000	5,000,000
Preferred stock, issued (in shares)	32,000	32,000
Preferred stock, outstanding (in shares)	32,000	32,000