NOTES PAYABLE - NOTES PAYABLE OUTSTANDING (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Notes Payable:
Current Portion, Net	$ 48,691	$ 43,319
Long Term Portion, Net	0	19,132
2013 Prospect Term Loan Agreement
Notes Payable:
Current Portion, Net	12,205	0
Long Term Portion, Net	0	20,627
Bison Note Payable
Notes Payable:
Current Portion, Gross	10,000	10,000
Long Term Portion, Gross	0	0
Non-recourse Notes Payable [Member]
Notes Payable:
Current Portion, Gross	12,205	0
Long Term Portion, Gross	0	20,627
Unamortized debt issuance costs, current	(763)	0
Unamortized debt issuance costs, noncurrent	0	(1,495)
Current Portion, Net	11,442	0
Long Term Portion, Net	0	19,132
Non-recourse Notes Payable [Member] \| 2013 Prospect Term Loan Agreement
Notes Payable:
Current Portion, Gross	12,205	0
Long Term Portion, Gross	0	20,627
Secured Debt [Member] \| Second Secured Lien Notes
Notes Payable:
Current Portion, Gross	8,222	11,132
Long Term Portion, Gross	0	0
Recourse Notes Payable [Member]
Notes Payable:
Current Portion, Gross	37,709	44,755
Long Term Portion, Gross	0	0
Unamortized debt issuance costs, current	(460)	(1,436)
Unamortized debt issuance costs, noncurrent	0
Current Portion, Net	37,249	43,319
Long Term Portion, Net	0	0
Recourse Notes Payable [Member] \| Credit Facility
Notes Payable:
Current Portion, Gross		18,623
Long Term Portion, Gross	0	0
Recourse Notes Payable [Member] \| Convertible Notes
Notes Payable:
Current Portion, Gross	5,000	5,000
Long Term Portion, Gross	$ 0	$ 0

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