ALLOWANCE FOR CREDIT LOSSES, Amortized Cost Basis (Details) - USD ($) $ in Thousands		6 Months Ended
		Sep. 30, 2024		Mar. 31, 2024
Credit Risk Profile, Segregated by Class [Abstract]
2025/2024		$ 126,530	[1]	$ 127,633	[2]
2024/2023		61,825	[1]	38,086	[2]
2023/2022		26,953	[1]	7,216	[2]
2022/2021		3,716	[1]	4,118	[2]
2021/2020		2,510	[1]	132	[2]
2020/2019 and prior		62	[1]	7	[2]
Total		221,596	[1]	177,192	[2]
Transfers	[3]	(38,450)	[1]	(35,723)	[2]
Net credit exposure		183,146	[1]	141,469	[2]
Unguaranteed residual value		$ 4,683		3,718
Minimum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating		8.00%
Maximum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating		100.00%
Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2025/2024		$ 86,641		82,649
2024/2023		38,209		19,081
2023/2022		12,193		3,742
2022/2021		1,353		2,708
2021/2020		1,677		30
2020/2019 and prior		15		0
Total		140,088		108,210
Transfers	[3]	(28,346)		(29,159)
Net credit exposure		111,742		79,051
Unguaranteed residual value		0	[4]	0	[5]
Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2025/2024		39,889		44,984
2024/2023		23,616		19,005
2023/2022		14,760		3,474
2022/2021		2,363		1,410
2021/2020		833		102
2020/2019 and prior		47		7
Total		81,508		68,982
Transfers	[3]	(10,104)		(6,564)
Net credit exposure		71,404		62,418
Unguaranteed residual value		$ 11,963	[4]	9,078	[5]
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]
2025/2024		$ 75,421		63,934
2024/2023		32,252		15,821
2023/2022		9,154		3,440
2022/2021		1,253		2,656
2021/2020		1,655		30
2020/2019 and prior		7		0
Total		119,742		85,881
Transfers	[3]	(24,544)		(25,683)
Net credit exposure		95,198		60,198
High CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2025/2024		19,768		22,123
2024/2023		10,493		9,457
2023/2022		7,659		1,341
2022/2021		1,022		1,151
2021/2020		729		100
2020/2019 and prior		37		7
Total		39,708		34,179
Transfers	[3]	(2,505)		(1,128)
Net credit exposure		$ 37,203		33,051
Average CQR [Member] | Minimum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating		1.00%
Average CQR [Member] | Maximum [Member]
Credit Risk Profile, Segregated by Class [Abstract]
Loss rate on credit quality rating		8.00%
Average CQR [Member] | Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2025/2024		$ 11,220		18,715
2024/2023		5,957		3,260
2023/2022		3,039		302
2022/2021		100		52
2021/2020		22		0
2020/2019 and prior		8		0
Total		20,346		22,329
Transfers	[3]	(3,802)		(3,476)
Net credit exposure		16,544		18,853
Average CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2025/2024		20,121		22,861
2024/2023		13,123		9,548
2023/2022		7,101		2,133
2022/2021		1,341		259
2021/2020		104		2
2020/2019 and prior		10		0
Total		41,800		34,803
Transfers	[3]	(7,599)		(5,436)
Net credit exposure		$ 34,201		$ 29,367

[1] Excludes unguaranteed residual values of $4,683 thousand that we retained after selling the related lease receivable.

[2] Excludes unguaranteed residual values of $3,718 thousand that we retained after selling the related lease receivable.

[3] Transfers consist of receivables that have been transferred to third-party financial institutions on a non-recourse basis.

[4] Includes unguaranteed residual values of $4,683 thousand that we retained after selling the related lease receivable.

[5] Includes unguaranteed residual values of $3,718 thousand that we retained after selling the related lease receivable.