IDSY: Common stock; authorized 50,000,000 shares, $0.01 par value; 12,491,000 and 12,546,000 shares issued at December 31, 2010 and June 30, 2011, respectively; shares outstanding, 11,242,000 and 11,124,000 at December 31, 2010 and June 30, 2011, respectively