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Inventories - Summary of Inventories (Detail) - USD ($)
$ in Thousands
Mar. 31, 2017
Mar. 31, 2016
Inventory Disclosure [Abstract]    
Finished goods $ 56,652 $ 60,249
Raw and packaging materials 53,436 48,329
Work in progress 27,200 26,756
Other 3,757 3,219
Inventories $ 141,045 $ 138,553