RESERVES FOR CREDIT LOSSES, CQR (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012
Financing Receivable, Recorded Investment [Line Items]
Total Minimum Lease Payments	$ 86,637	$ 99,747
Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable Recorded Investment 31-60 Days Past Due	63	0
Financing Receivable Recorded Investment 61-90 Days Past Due	23	0
Financing Receivable Recorded Investment Greater Than 90 Days Past Due	471	86
Total Past Due	557	86
Current	295	3,077
Unbilled Minimum Lease Payments	16,540	24,137
Total Minimum Lease Payments	17,392	27,300
Investment in direct financing and sales-type leases that are past due [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable Recorded Investment 31-60 Days Past Due	195	1,852
Financing Receivable Recorded Investment 61-90 Days Past Due	100	12
Financing Receivable Recorded Investment Greater Than 90 Days Past Due	132	84
Total Past Due	427	1,948
Current	503	1,030
Unbilled Minimum Lease Payments	85,707	96,769
Total Minimum Lease Payments	86,637	99,747
Unearned Income	(7,611)	(9,002)
Non-Recourse Notes Payable	(20,393)	(18,589)
Net Credit Exposure	58,633	72,156
High CQR [Member]
Financing Receivable, Recorded Investment [Line Items]
Losses on net credit exposure, lower limit (in hundredths)	0.00%
Losses on net credit exposure, upper limit (in hundredths)	5.00%
High CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable Recorded Investment 31-60 Days Past Due	40	0
Financing Receivable Recorded Investment 61-90 Days Past Due	0	0
Financing Receivable Recorded Investment Greater Than 90 Days Past Due	0	0
Total Past Due	40	0
Current	186	2,661
Unbilled Minimum Lease Payments	11,290	18,140
Total Minimum Lease Payments	11,516	20,801
High CQR [Member] | Investment in direct financing and sales-type leases that are past due [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable Recorded Investment 31-60 Days Past Due	76	1,767
Financing Receivable Recorded Investment 61-90 Days Past Due	7	5
Financing Receivable Recorded Investment Greater Than 90 Days Past Due	124	72
Total Past Due	207	1,844
Current	364	977
Unbilled Minimum Lease Payments	49,701	58,214
Total Minimum Lease Payments	50,272	61,035
Unearned Income	(3,492)	(4,541)
Non-Recourse Notes Payable	(5,716)	(3,480)
Net Credit Exposure	41,064	53,014
Average CQR [Member]
Financing Receivable, Recorded Investment [Line Items]
Losses on net credit exposure, lower limit (in hundredths)	2.00%
Losses on net credit exposure, upper limit (in hundredths)	25.00%
Average CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable Recorded Investment 31-60 Days Past Due	0	0
Financing Receivable Recorded Investment 61-90 Days Past Due	0	0
Financing Receivable Recorded Investment Greater Than 90 Days Past Due	0	0
Total Past Due	0	0
Current	0	29
Unbilled Minimum Lease Payments	1,536	2,113
Total Minimum Lease Payments	1,536	2,142
Average CQR [Member] | Investment in direct financing and sales-type leases that are past due [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable Recorded Investment 31-60 Days Past Due	119	85
Financing Receivable Recorded Investment 61-90 Days Past Due	93	7
Financing Receivable Recorded Investment Greater Than 90 Days Past Due	8	12
Total Past Due	220	104
Current	34	53
Unbilled Minimum Lease Payments	35,780	38,337
Total Minimum Lease Payments	36,034	38,494
Unearned Income	(4,092)	(4,445)
Non-Recourse Notes Payable	(14,677)	(15,109)
Net Credit Exposure	17,265	18,940
Low CQR [Member]
Financing Receivable, Recorded Investment [Line Items]
Losses on net credit exposure, lower limit (in hundredths)	50.00%
Losses on net credit exposure, upper limit (in hundredths)	100.00%
Low CQR [Member] | Notes Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable Recorded Investment 31-60 Days Past Due	23	0
Financing Receivable Recorded Investment 61-90 Days Past Due	23	0
Financing Receivable Recorded Investment Greater Than 90 Days Past Due	471	86
Total Past Due	517	86
Current	109	387
Unbilled Minimum Lease Payments	3,714	3,884
Total Minimum Lease Payments	4,340	4,357
Low CQR [Member] | Investment in direct financing and sales-type leases that are past due [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable Recorded Investment 31-60 Days Past Due	0	0
Financing Receivable Recorded Investment 61-90 Days Past Due	0	0
Financing Receivable Recorded Investment Greater Than 90 Days Past Due	0	0
Total Past Due	0	0
Current	105	0
Unbilled Minimum Lease Payments	226	218
Total Minimum Lease Payments	331	218
Unearned Income	(27)	(16)
Non-Recourse Notes Payable	0	0
Net Credit Exposure	$ 304	$ 202