Treasury Stock

12 Months Ended

Dec. 31, 2012

Treasruy Stock [Abstract]

Treasury Stock [Text Block]

Treasury Stock

In July 2010, our Board of Directors approved a common stock purchase plan to purchase up to $40.0 million of our common stock. This plan has no expiration date and we have $28.1 million remaining on this purchase plan. We did not repurchase any of our common stock in the year ended December 31, 2012. We expect to use the treasury stock to issue shares for stock option exercises, restricted stock grants and employee stock purchase plan stock purchases.