CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Series B Preferred stock	Dec. 31, 2012 Series B Preferred stock	Mar. 31, 2013 Series C Preferred stock	Dec. 31, 2012 Series C Preferred stock	Mar. 31, 2013 Common stock	Dec. 31, 2012 Common stock	Mar. 31, 2013 Nonvoting common stock	Dec. 31, 2012 Nonvoting common stock
Preferred stock, par value (in dollars per share)			$ 0	$ 0	$ 0	$ 0
Preferred stock, shares authorized			10,000,000	10,000,000	10,000,000	10,000,000
Preferred stock, shares issued			7,462	7,462	4,379	4,379
Preferred stock, shares outstanding			7,462	7,462	4,379	4,379
Common stock, par value (in dollars per share)							$ 1	$ 1	$ 1	$ 1
Common stock, shares authorized							20,000,000	20,000,000	5,000,000	5,000,000
Common stock, shares issued							2,292,728	2,250,364	90,000	90,000
Common stock, shares outstanding							2,292,728	2,250,364	90,000	90,000
Treasury stock, shares	235,938	220,525