Quarterly report pursuant to Section 13 or 15(d)

Stock Repurchases (Details)

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Stock Repurchases (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Sep. 30, 2015
Jun. 30, 2015
Dec. 31, 2014
Common Stock, par value   $ 0.01 $ 0.01
Treasury Stock, Shares, Acquired   284,227  
Treasury Stock, Value, Acquired, Cost Method   $ 19.9  
Stock Repurchase Program, Remaining Authorized Repurchase Amount   $ 130.1  
Restricted Stock [Member]      
Treasury Stock, Shares, Acquired   40,859  
Treasury Stock, Value, Acquired, Cost Method   $ 3.0  
Subsequent Event [Member]      
Treasury Stock, Shares, Acquired 107,018    
Treasury Stock, Value, Acquired, Cost Method $ 6.9