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Stockholders' Equity (Details) (USD $)
12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Class of Stock [Line Items]    
Common stock, shares authorized 250,000,000 250,000,000
Common stock, par value (in USD per share) $ 0.01 $ 0.01
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, par value (in USD per share) $ 0.01 $ 0.01
Voting rights, number of votes per common share owned 1  
Dividends declared on common stock $ 0  
Dividends paid on common stock $ 0  
Restricted Shares
   
Class of Stock [Line Items]    
Restricted stock repurchased during period, shares 25,464  
Restricted stock acquired, average cost per share $ 29.23