FINANCING RECEIVABLES AND OPERATING LEASES (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Sep. 30, 2021		Sep. 30, 2020	Sep. 30, 2021		Sep. 30, 2020	Mar. 31, 2021		Mar. 31, 2020
Profit Recognized for Sales-type Leases [Abstract]
Net sales		$ 5,962		$ 7,655	$ 9,779		$ 17,818
Cost of sales		4,926		5,402	8,291		10,729
Gross Profit		1,036		2,253	1,488		7,089
Interest Income on Sales-type Leases [Abstract]
Interest Income on sales-type leases		1,000		1,884	2,290		4,103
Lease income on operating leases		6,634		3,900	11,844		7,738
Financing Receivables [Abstract]
Unguaranteed residual value		8,081			8,081			$ 9,453
Initial direct costs, net of amortization		271			271			425
Allowance for credit losses		(4,475)		(4,894)	(4,475)		(4,894)	(4,447)		$ (3,189)
Reported as [Abstract]
Current		80,082			80,082			106,272
Future scheduled minimum lease payments [Abstract]
Unguaranteed residual value for sales-type leases		8,081			8,081			9,453
Investment in operating lease equipment - net [Abstract]
Cost of equipment under operating leases		34,082			34,082			18,748
Accumulated depreciation		(10,700)			(10,700)			(7,870)
Investment in operating lease equipment - net	[1]	23,382			23,382			10,878
Unguaranteed residual value of operating lease equipment net		4,600			4,600			2,500
Future scheduled minimum lease rental payments [Abstract]
Collateral for non-recourse notes payable - Finance receivables		22,600			22,600			60,500
Collateral for non-recourse notes payable - Operating leases		8,100			8,100			3,300
Gain on sale of financing receivables		10,100		4,500	13,300		7,000
Proceeds from sale of financing receivables		615,000		118,500	690,300		191,700
Contract liabilities - servicing of financial assets		500			500			300
Notes Receivables [Member]
Financing Receivables [Abstract]
Gross receivables		104,066			104,066			112,641
Unguaranteed residual value		0	[2]		0	[2]		0	[3]
Initial direct costs, net of amortization		271			271			425
Unearned income		0			0			0
Allowance for credit losses		(1,687)	[4]	(1,337)	(1,687)	[4]	(1,337)	(1,212)	[4]	(798)
Total, net		102,650			102,650			111,854
Reported as [Abstract]
Current		55,928			55,928			73,175
Long-term		46,722			46,722			38,679
Total, net		102,650			102,650			111,854
Lease Receivables [Member]
Financing Receivables [Abstract]
Gross receivables		54,261			54,261			68,393
Unguaranteed residual value		13,411	[2]		13,411	[2]		14,876	[3]
Initial direct costs, net of amortization		0			0			0
Unearned income		(7,095)			(7,095)			(8,393)
Allowance for credit losses		(672)	[4]	$ (1,227)	(672)	[4]	$ (1,227)	(1,171)	[4]	$ (610)
Total, net		59,905			59,905			73,705
Reported as [Abstract]
Current		24,154			24,154			33,097
Long-term		35,751			35,751			40,608
Total, net		59,905			59,905			73,705
Financing Receivables [Member]
Financing Receivables [Abstract]
Gross receivables		158,327			158,327			181,034
Unguaranteed residual value		13,411	[2]		13,411	[2]		14,876	[3]
Initial direct costs, net of amortization		271			271			425
Unearned income		(7,095)			(7,095)			(8,393)
Allowance for credit losses	[4]	(2,359)			(2,359)			(2,383)
Total, net		162,555			162,555			185,559
Reported as [Abstract]
Current		80,082			80,082			106,272
Long-term		82,473			82,473			79,287
Total, net		$ 162,555			$ 162,555			$ 185,559

[1] Amounts include estimated unguaranteed residual values of $4.6 million and $2.5 million as of September 30, 2021, and March 31, 2021, respectively.

[2] Includes unguaranteed residual values of $8,081 thousand that we retained after selling the related lease receivable.

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

[4] Refer to Note 6, “Allowance for Credit Losses” for details.