CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Stockholders' equity
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, dividend rate (in hundredths)	5.00%	5.00%
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	22,252	22,252
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	7,937,143	7,937,143
Common stock, shares outstanding (in shares)	7,937,143	7,937,143