SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - PROPERTY AND EQUIPMENT (Details)	3 Months Ended
	Jun. 30, 2019
Computer equipment and software | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives	3 years
Computer equipment and software | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives	5 years
Digital cinema projection systems
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives	10 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives	10 years
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives	3 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Property and equipment estimated useful lives	6 years