Cinema Systems and Property & Equipment (Tangible Fixed Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Mar. 31, 2015
Property and equipment, RealD Cinema Systems and digital projectors
Total	$ 248,011	$ 243,205
Less accumulated depreciation	(162,019)	(140,363)
Cinema Systems and Property & Equipment, net	85,992	102,842
RealD Cinema Systems
Property and equipment, RealD Cinema Systems and digital projectors
Total	213,937	208,056
Leasehold improvements
Property and equipment, RealD Cinema Systems and digital projectors
Total	15,575	16,974
Machinery and equipment
Property and equipment, RealD Cinema Systems and digital projectors
Total	5,948	5,791
Furniture and fixtures
Property and equipment, RealD Cinema Systems and digital projectors
Total	1,253	1,238
Computer equipment and software
Property and equipment, RealD Cinema Systems and digital projectors
Total	10,957	10,581
Construction in process
Property and equipment, RealD Cinema Systems and digital projectors
Total	$ 341	$ 565