ALLOWANCE FOR CREDIT LOSSES, Amortized Cost Basis (Details) - USD ($) $ in Thousands		9 Months Ended
		Dec. 31, 2021		Mar. 31, 2021
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021		$ 101,847	[1]	$ 153,825	[2]
2021/2020		48,479	[1]	18,085	[2]
2020/2019		7,666	[1]	4,458	[2]
2019/2018		1,966	[1]	1,512	[2]
2018/2017		325	[1]	184	[2]
2017	[1]	30
Total		160,313	[1]	178,064	[2]
Transfers	[3]	(63,126)	[1]	(78,427)	[2]
Net credit exposure		97,187	[1]	99,637	[2]
Unguaranteed residual value		7,176		9,453
Lease receivable and initial direct costs of notes receivable, net of amortization		234		425
Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021		75,057		101,482
2021/2020		36,381		8,718
2020/2019		3,289		1,643
2019/2018		601		779
2018/2017		112		19
2017		6
Total		115,446		112,641
Transfers	[3]	(57,698)		(66,367)
Net credit exposure		57,748		46,274
Unguaranteed residual value		0	[4]	0	[5]
Lease receivable and initial direct costs of notes receivable, net of amortization		234		425
Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021		26,790		52,343
2021/2020		12,098		9,367
2020/2019		4,377		2,815
2019/2018		1,365		733
2018/2017		213		165
2017		24
Total		44,867		65,423
Transfers	[3]	(5,428)		(12,060)
Net credit exposure		39,439		53,363
Unguaranteed residual value		11,522	[4]	14,876	[5]
Lease receivable and initial direct costs of notes receivable, net of amortization		$ 0		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		$ 57,295		93,793
2021/2020		32,657		6,250
2020/2019		1,952		769
2019/2018		285		771
2018/2017		110		19
2017		6
Total		92,305		101,602
Transfers	[3]	(46,939)		(63,471)
Net credit exposure		45,366		38,131
High CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021		16,273		28,898
2021/2020		5,671		5,885
2020/2019		3,047		1,798
2019/2018		1,241		463
2018/2017		103		125
2017		14
Total		26,349		37,169
Transfers	[3]	(3,194)		(7,468)
Net credit exposure		$ 23,155		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		$ 17,762		7,689
2021/2020		3,724		2,468
2020/2019		1,337		550
2019/2018		316		8
2018/2017		2		0
2017		0
Total		23,141		10,715
Transfers	[3]	(10,759)		(2,896)
Net credit exposure		12,382		7,819
Average CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021		10,250		23,445
2021/2020		5,579		3,482
2020/2019		1,330		1,017
2019/2018		124		270
2018/2017		110		40
2017		10
Total		17,403		28,254
Transfers	[3]	(2,234)		(4,592)
Net credit exposure		$ 15,169		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	[3]	0		0
Net credit exposure		0		324
Low CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2022/2021		267		0
2021/2020		848		0
2020/2019		0		0
2019/2018		0		0
2018/2017		0		0
2017		0
Total		1,115		0
Transfers	[3]	0		0
Net credit exposure		$ 1,115		$ 0

[1] Unguaranteed residual values of $7,176 thousand that we retained after selling the related lease receivable and initial direct costs of notes receivable of $234 thousand are excluded from amortized cost.

[2] Unguaranteed residual values of $9,453 thousand that we retained after selling the related lease receivable and initial direct costs of notes receivable of $425 thousand are excluded from amortized cost.

[3] Transfers consist of receivables that have been transferred to third-party financial institutions on a non-recourse basis and receivables that are in the process of being transferred to third-party financial institutions.

[4] Includes unguaranteed residual values of $7,176 thousand that we retained after selling the related lease receivable.

[5] Includes unguaranteed residual values of $9,453 thousand that we retained after selling the related lease receivable.