SEGMENT INFORMATION - ASSETS and DEBT (Details)	6 Months Ended
	Sep. 30, 2016 USD ($) system segments systems	Mar. 31, 2016 USD ($)
Segment Reporting, Asset Reconciling Item [Line Items]
Number of reportable segments | segments	4
Deferred Revenue, Number of Systems that have Ceased to Earn VPF | system	655
Total intangible assets, net	$ 23,017,000	$ 25,940,000
Total goodwill	8,701,000	8,701,000
Assets from continuing operations	176,233,000	209,398,000
Notes payable, non-recourse	88,270,000	112,312,000
Current portion of notes payable	84,584,000	86,938,000
Capital leases	$ 4,060,000	4,225,000
Phase I
Segment Reporting, Asset Reconciling Item [Line Items]
Number of systems installed | systems	3,724
Phase I | Segment, Continuing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total intangible assets, net	$ 183,000	206,000
Total goodwill	0	0
Assets from continuing operations	34,427,000	48,292,000
Notes payable, non-recourse	74,139,000	93,372,000
Current portion of notes payable	0	0
Capital leases	$ 0	0
Phase II
Segment Reporting, Asset Reconciling Item [Line Items]
Number of systems installed | systems	8,904
Phase II | Segment, Continuing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total intangible assets, net	$ 0	0
Total goodwill	0	0
Assets from continuing operations	51,416,000	53,727,000
Notes payable, non-recourse	14,131,000	18,940,000
Current portion of notes payable	0	0
Capital leases	0	0
Services | Segment, Continuing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total intangible assets, net	0	0
Total goodwill	0	0
Assets from continuing operations	1,009,000	1,064,000
Notes payable, non-recourse	0	0
Current portion of notes payable	0	0
Capital leases	0	0
Content & Entertainment | Segment, Continuing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total intangible assets, net	22,822,000	25,721,000
Total goodwill	8,701,000	8,701,000
Assets from continuing operations	83,849,000	87,344,000
Notes payable, non-recourse	0	0
Current portion of notes payable	0	0
Capital leases	19,000	30,000
Corporate | Segment, Continuing Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Total intangible assets, net	12,000	13,000
Total goodwill	0	0
Assets from continuing operations	5,532,000	18,971,000
Notes payable, non-recourse	0	0
Current portion of notes payable	84,584,000	86,938,000
Capital leases	$ 4,041,000	$ 4,195,000