RESERVES FOR CREDIT LOSSES, CQR (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016
Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	$ 617	$ 973
Current	180	1,143
Unbilled Minimum Lease Payments	70,546	64,187
Total Minimum Lease Payments	71,343	66,303
Unearned income	(5,152)	(4,111)
Non-Recourse Notes Payable	(34,216)	(31,628)
Net Credit Exposure	31,975	30,564
Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	5,826	5,974
Current	2,164	503
Unbilled Minimum Lease Payments	45,177	37,965
Total Minimum Lease Payments	53,167	44,442
Non-Recourse Notes Payable	(27,970)	(21,586)
Net Credit Exposure	$ 25,197	22,856
High CQR [Member] | Minimum [Member]
Financing Receivable, Recorded Investment [Line Items]
Losses on net credit exposure	0.00%
High CQR [Member] | Maximum [Member]
Financing Receivable, Recorded Investment [Line Items]
Losses on net credit exposure	5.00%
High CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	$ 310	721
Current	137	984
Unbilled Minimum Lease Payments	45,570	46,157
Total Minimum Lease Payments	46,017	47,862
Unearned income	(3,466)	(2,705)
Non-Recourse Notes Payable	(21,532)	(22,914)
Net Credit Exposure	21,019	22,243
High CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	2,508	2,872
Current	1,244	301
Unbilled Minimum Lease Payments	28,206	24,092
Total Minimum Lease Payments	31,958	27,265
Non-Recourse Notes Payable	(15,330)	(11,644)
Net Credit Exposure	$ 16,628	15,621
Average CQR [Member] | Minimum [Member]
Financing Receivable, Recorded Investment [Line Items]
Losses on net credit exposure	2.00%
Average CQR [Member] | Maximum [Member]
Financing Receivable, Recorded Investment [Line Items]
Losses on net credit exposure	15.00%
Average CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	$ 165	110
Current	43	159
Unbilled Minimum Lease Payments	24,976	18,030
Total Minimum Lease Payments	25,184	18,299
Unearned income	(1,667)	(1,387)
Non-Recourse Notes Payable	(12,684)	(8,714)
Net Credit Exposure	10,833	8,198
Average CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	167	0
Current	920	202
Unbilled Minimum Lease Payments	16,971	13,873
Total Minimum Lease Payments	18,058	14,075
Non-Recourse Notes Payable	(12,640)	(9,942)
Net Credit Exposure	$ 5,418	4,133
Low CQR [Member] | Minimum [Member]
Financing Receivable, Recorded Investment [Line Items]
Losses on net credit exposure	15.00%
Low CQR [Member] | Maximum [Member]
Financing Receivable, Recorded Investment [Line Items]
Losses on net credit exposure	100.00%
Low CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	$ 142	142
Current	0	0
Unbilled Minimum Lease Payments	0	0
Total Minimum Lease Payments	142	142
Unearned income	(19)	(19)
Non-Recourse Notes Payable	0	0
Net Credit Exposure	123	123
Low CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	3,151	3,102
Current	0	0
Unbilled Minimum Lease Payments	0	0
Total Minimum Lease Payments	3,151	3,102
Non-Recourse Notes Payable	0	0
Net Credit Exposure	3,151	3,102
31 to 60 Days Past Due [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	207	590
31 to 60 Days Past Due [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	1,526	399
31 to 60 Days Past Due [Member] | High CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	163	575
31 to 60 Days Past Due [Member] | High CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	1,369	399
31 to 60 Days Past Due [Member] | Average CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	44	15
31 to 60 Days Past Due [Member] | Average CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	157	0
31 to 60 Days Past Due [Member] | Low CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	0	0
31 to 60 Days Past Due [Member] | Low CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	0	0
61 to 90 Days Past Due [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	74	69
61 to 90 Days Past Due [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	322	305
61 to 90 Days Past Due [Member] | High CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	49	52
61 to 90 Days Past Due [Member] | High CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	312	305
61 to 90 Days Past Due [Member] | Average CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	25	17
61 to 90 Days Past Due [Member] | Average CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	10	0
61 to 90 Days Past Due [Member] | Low CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	0	0
61 to 90 Days Past Due [Member] | Low CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	0	0
Greater than 90 Days Past Due [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	336	314
Greater than 90 Days Past Due [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	3,978	5,270
Greater than 90 Days Past Due [Member] | High CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	98	94
Greater than 90 Days Past Due [Member] | High CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	827	2,168
Greater than 90 Days Past Due [Member] | Average CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	96	78
Greater than 90 Days Past Due [Member] | Average CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	0	0
Greater than 90 Days Past Due [Member] | Low CQR [Member] | Investment in Direct Financing and Sales-type Leases that are Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	142	142
Greater than 90 Days Past Due [Member] | Low CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Past Due	$ 3,151	$ 3,102