CONSOLIDATED BALANCE SHEET COMPONENTS - ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Consolidated Balance Sheet Components [Abstract]
Accounts payable	$ 35,032	$ 33,069
Participations and royalties payable	25,788	32,399
Accrued compensation and benefits	2,276	1,059
Accrued taxes payable	352	619
Interest payable	130	1,357
Accrued restructuring and transition expenses	505	44
Accrued other expenses	5,142	5,132
Total accounts payable and accrued expenses	$ 69,225	$ 73,679