XML 43 R32.htm IDEA: XBRL DOCUMENT v3.3.1.900
Inventories - Schedule of Inventories (Detail) - USD ($)
$ in Thousands
Nov. 30, 2015
May. 31, 2015
Inventory Disclosure [Abstract]    
Raw materials $ 30,903 $ 28,040
Work in process 11,171 11,910
Finished goods 28,739 27,438
Inventories $ 70,813 $ 67,388