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Stock Repurchase Program (Details) (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended 3 Months Ended
Feb. 16, 2012
Apr. 01, 2014
Stock Repurchase Program    
Repurchase of common stock authorized by board of directors $ 100.0  
Amount paid for repurchase of common stock   24.2
Number of shares repurchased   960,000
Amount remaining under authorized stock repurchase program   $ 33.7