ALLOWANCE FOR CREDIT LOSSES, Amortized Cost Basis (Details) - USD ($) $ in Thousands		3 Months Ended
		Jun. 30, 2020		Mar. 31, 2020
Credit Risk Profile, Segregated by Class [Abstract]
2021	[1]	$ 77,208
2020	[1]	57,318
2019	[1]	25,140
2018	[1]	3,572
2017	[1]	540
2016 and prior	[1]	108
Total	[1]	163,886
Transfers	[1],[2]	(96,637)
Net credit exposure	[1]	67,249
Unguaranteed residual value		12,962
Lease receivable and initial direct costs of notes receivable, net of amortization		552
Notes Receivable [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021		52,563
2020		32,377
2019		15,022
2018		1,100
2017		45
2016 and prior		89
Total		101,196
Transfers	[2]	(67,934)
Net credit exposure		33,262
Unguaranteed residual value		0	[3]	$ 0	[4]
Lease receivable and initial direct costs of notes receivable, net of amortization	[5]	552		212
Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021		24,645
2020		24,941
2019		10,118
2018		2,472
2017		495
2016 and prior		19
Total		62,690
Transfers	[2]	(28,703)
Net credit exposure		33,987
Unguaranteed residual value		21,534	[3]	21,862	[4]
Lease receivable and initial direct costs of notes receivable, net of amortization	[5]	$ 0		$ 247
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]
2021		$ 49,137
2020		15,822
2019		13,503
2018		1,024
2017		45
2016 and prior		0
Total		79,531
Transfers	[2]	(56,342)
Net credit exposure		23,189
High CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021		15,995
2020		13,812
2019		4,620
2018		1,597
2017		387
2016 and prior		16
Total		36,427
Transfers	[2]	(18,580)
Net credit exposure		$ 17,847
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]
2021		$ 3,426
2020		16,395
2019		1,195
2018		76
2017		0
2016 and prior		0
Total		21,092
Transfers	[2]	(11,592)
Net credit exposure		9,500
Average CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021		8,650
2020		11,129
2019		5,498
2018		875
2017		108
2016 and prior		3
Total		26,263
Transfers	[2]	(10,123)
Net credit exposure		$ 16,140
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]
2021		$ 0
2020		160
2019		324
2018		0
2017		0
2016 and prior		89
Total		573
Transfers	[2]	0
Net credit exposure		573
Low CQR [Member] | Lease Receivables [Member]
Credit Risk Profile, Segregated by Class [Abstract]
2021		0
2020		0
2019		0
2018		0
2017		0
2016 and prior		0
Total		0
Transfers	[2]	0
Net credit exposure		$ 0

[1] Unguaranteed residual values of $12,962 thousand that we retained after selling the related lease receivable and initial direct costs of notes receivable of $552 thousand are excluded from amortized cost.

[2] 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.

[3] Includes unguaranteed residual values of $12,962 thousand that we retained after selling the related lease receivable.

[4] Includes unguaranteed residual values of $14,972 thousand for sales type leases, which have been sold and accounted for as sales.

[5] Refer to Note 7, “Allowance for Credit Losses” for details.