Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.3.1.900
Debt (Details) - USD ($)
$ in Thousands
Nov. 30, 2015
May. 31, 2015
Debt Instrument [Line Items]    
Financing costs $ (10,626) $ (12,514)
Total debt 451,943 410,821
Current 129,926 90,550
Non-current 322,017 320,271
Asset-based revolving loan    
Debt Instrument [Line Items]    
Asset-based revolving loan 132,112 92,878
Term loan due 2021    
Debt Instrument [Line Items]    
Asset-based revolving loan $ 330,457 $ 330,457