CONSOLIDATED BALANCE SHEET COMPONENTS - PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 366,817	$ 371,849
Less: accumulated depreciation and amortization	(333,679)	(310,109)
Total property and equipment, net	33,138	61,740
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	816	824
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,374	9,400
Digital Cinema Projection Systems [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	360,651	360,651
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	592	592
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 384	$ 382