Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Securities held-to-maturity, fair value	$ 24	$ 126
Serial preferred stock, par value	$ 1	$ 1
Serial preferred stock, authorized	5,000,000	5,000,000
Serial preferred stock, issued	20,000	20,000
Serial preferred stock, outstanding	20,000	20,000
Serial preferred stock, liquidation preference	$ 20,000	$ 20,000
Common stock, par value	$ 1	$ 1
Common stock, authorized	35,000,000	35,000,000
Common stock, issued	4,749,415	4,726,329
Common stock, outstanding	4,749,415	4,726,329