PROPERTY AND EQUIPMENT, ASSETS HELD FOR SALE AND OEM COST RECOVERIES OEM Cost Recoveries (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Property and equipment [Line Items]
Deferred OEM cost recovery	$ 3,997	$ 8,082
Original Equipment Manufacturer Cost Recoveries
Property and equipment [Line Items]
Original Equipment Manufacturer, Recoveries Sought		136,000
Original Equipment Manufacturer, Amount Received	11,000	125,000
Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment, Period Increase (Decrease)		94,500
Deferred OEM cost recovery	6,000	13,900
Effect on Future Earnings, Offset Amount	7,600
Original Equipment Manufacturer Cost Recoveries | Rent Expense [Member]
Property and equipment [Line Items]
Offset Amount, Expense	7,900	$ 16,600
Offset Amount, Expense, Rolling Year Two	4,000
Offset Amount, Expense, Fiscal 2021	2,000
Original Equipment Manufacturer Cost Recoveries | Direct cost
Property and equipment [Line Items]
Effect on Future Earnings, Offset Amount	$ (3,400)