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Shareholders' Equity
6 Months Ended
Jun. 30, 2013
Stockholders' Equity Note [Abstract]  
Shareholders' Equity
Shareholders' Equity
 
Retired Shares
 
During the three and six months ended June 30, 2013, we repurchased and contemporaneously retired 109,027 and 237,563 shares of our common stock at an aggregate cost of $0.4 million and $0.9 million, respectively.