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Stockholders' Equity (Details)
 3 Months Ended
Jun. 30, 2019
USD ($)
vote
$ / shares
shares
Jun. 30, 2018
USD ($)
$ / shares
shares
Mar. 31, 2019
$ / shares
shares
Class of Stock [Line Items]      
Common stock, shares authorized (in shares) | shares 250,000,000.0   250,000,000
Common stock, par value (in USD per share) | $ / shares $ 0.01   $ 0.01
Preferred stock, shares authorized (in shares) | shares 5,000,000.0   5,000,000
Preferred stock, par value (in USD per share) | $ / shares $ 0.01   $ 0.01
Voting rights, number of votes per common share owned | vote 1    
Dividends declared on common stock | $ $ 0    
Stock repurchased during period (in shares) | shares 949,825 1,449,750  
Stock acquired, average cost per share (in USD per share) | $ / shares $ 30.29 $ 34.47  
Treasury stock acquired | $ $ 29,565,000 $ 52,259,000  
Restricted Shares      
Class of Stock [Line Items]      
Stock repurchased during period (in shares) | shares 26,264 68,939  
Stock acquired, average cost per share (in USD per share) | $ / shares $ 30.44 $ 33.09  
Treasury stock acquired | $ $ 28,800,000 $ 50,000,000.0