Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.3.1.900
Debt (Details) - USD ($)
$ in Thousands
Feb. 29, 2016
May. 31, 2015
Debt Instrument [Line Items]    
Financing costs $ (9,986) $ (12,514)
Total debt 439,711 410,821
Current 117,073 90,550
Non-current 322,638 320,271
Asset-based revolving loan    
Debt Instrument [Line Items]    
Asset-based revolving loan 119,240 92,878
Term loan due 2021    
Debt Instrument [Line Items]    
Asset-based revolving loan $ 330,457 $ 330,457