Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

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Stockholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Jun. 25, 2014
Feb. 28, 2015
Feb. 29, 2016
Feb. 28, 2015
Subsidiary, Sale of Stock [Line Items]        
Proceeds from issuance of common stock     $ 0 $ 126,500
Repayments of debt     $ 0 119,605
Term Loan Due 2021 | Term Loan Due 2021        
Subsidiary, Sale of Stock [Line Items]        
Repayments of debt $ 119,500      
United States | IPO        
Subsidiary, Sale of Stock [Line Items]        
Shares issued in initial public offering 8,161,291      
Shares issued, exercise price (dollars per share) $ 15.50      
Proceeds from issuance of common stock $ 126,500      
Common share issuance costs   $ 213   $ 9,739