| Preferred stock, no par value, 4,000,000 shares authorized; 0 shares and 7,750 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively |
| Common stock and paid-in-capital, no par value, 6,000,000 shares authorized;4,917,761 and 4,789,023 issued; and 4,852,761 and 4,724,023 shares outstanding at June 30, 2011 and December 31, 2010 |