Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Shareholders' equity
Preferred stock, par value
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares outstanding	21,000	21,000
Common stock, par value
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares outstanding	8,605,053	8,597,993