INVENTORIES - Schedule of Inventories (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 22,305	$ 18,617
Work in process	998	651
Finished goods and deferred costs	16,699	38,761
Total inventories	$ 40,002	$ 58,029