ALLOWANCE FOR CREDIT LOSSES, Amortized Cost Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021	$ 69,671	$ 153,825
2021/2020	39,075	18,085
2020/2019	5,295	4,458
2019/2018	1,507	1,512
2018/2017	127	184
2017	15
Total	115,690	178,064
Transfers	(38,769)	(78,427)
Net credit exposure	76,921	99,637
Unguaranteed residual value	6,424	9,453
Lease receivable and initial direct costs of notes receivable, net of amortization		425
Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021	44,186	101,482
2021/2020	30,981	8,718
2020/2019	2,055	1,643
2019/2018	558	779
2018/2017	5	19
2017	4
Total	77,789	112,641
Transfers	(35,037)	(66,367)
Net credit exposure	42,752	46,274
Unguaranteed residual value	0	0
Lease receivable and initial direct costs of notes receivable, net of amortization		425
Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021	25,485	52,343
2021/2020	8,094	9,367
2020/2019	3,240	2,815
2019/2018	949	733
2018/2017	122	165
2017	11
Total	37,901	65,423
Transfers	(3,732)	(12,060)
Net credit exposure	34,169	53,363
Unguaranteed residual value	$ 9,141	14,876
Lease receivable and initial direct costs of notes receivable, net of amortization		0
High CQR [Member] | Maximum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	1.00%
High CQR [Member] | Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021	$ 35,264	93,793
2021/2020	28,005	6,250
2020/2019	1,297	769
2019/2018	345	771
2018/2017	2	19
2017	4
Total	64,917	101,602
Transfers	(30,274)	(63,471)
Net credit exposure	34,643	38,131
High CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021	14,549	28,898
2021/2020	5,002	5,885
2020/2019	2,499	1,798
2019/2018	902	463
2018/2017	50	125
2017	11
Total	23,013	37,169
Transfers	(3,385)	(7,468)
Net credit exposure	$ 19,628	29,701
Average CQR [Member] | Minimum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	2.00%
Average CQR [Member] | Maximum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	10.00%
Average CQR [Member] | Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021	$ 8,922	7,689
2021/2020	2,976	2,468
2020/2019	758	550
2019/2018	213	8
2018/2017	3	0
2017	0
Total	12,872	10,715
Transfers	(4,763)	(2,896)
Net credit exposure	8,109	7,819
Average CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021	10,936	23,445
2021/2020	3,092	3,482
2020/2019	741	1,017
2019/2018	47	270
2018/2017	72	40
2017	0
Total	14,888	28,254
Transfers	(347)	(4,592)
Net credit exposure	$ 14,541	23,662
Low CQR [Member] | Minimum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	10.00%
Low CQR [Member] | Maximum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating	100.00%
Low CQR [Member] | Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021	$ 0	0
2021/2020	0	0
2020/2019	0	324
2019/2018	0	0
2018/2017	0	0
2017	0
Total	0	324
Transfers	0	0
Net credit exposure	0	324
Low CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021	0	0
2021/2020	0	0
2020/2019	0	0
2019/2018	0	0
2018/2017	0	0
2017	0
Total	0	0
Transfers	0	0
Net credit exposure	$ 0	$ 0