CONSOLIDATED BALANCE SHEET COMPONENTS - PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 371,849	$ 372,081
Less: accumulated depreciation and amortization	(310,109)	(273,520)
Total property and equipment, net	61,740	98,561
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	824	821
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	9,400	9,590
Digital Cinema Projection Systems [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	360,651	360,744
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	592	546
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 382	$ 380