FINANCING RECEIVABLES AND OPERATING LEASES (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Sep. 30, 2019		Sep. 30, 2018	Sep. 30, 2019		Sep. 30, 2018	Mar. 31, 2019		Mar. 31, 2018
Profit Recognized for Sales-type Leases [Abstract]
Net sales		$ 3,133			$ 7,987
Cost of sales		2,702			6,652
Gross Profit		431			1,335
Interest Income on Sales-type Leases [Abstract]
Interest Income on sales-type leases		1,495			3,590
Lease income on operating leases		5,059			10,418
Financing Receivables [Abstract]
Reserve for credit losses		(2,868)		$ (2,745)	(2,868)		$ (2,745)	$ (2,614)		$ (2,664)
Reported as [Abstract]
Current		108,646			108,646			63,767
Future scheduled minimum lease payments [Abstract]
Remainder of Year ending March 31, 2020		43,732			43,732
Year ending March 31, 2021		22,787			22,787
Year ending March 31, 2022		14,038			14,038
Year ending March 31, 2023		4,979			4,979
Year ending March 31, 2024 and thereafter		2,453			2,453
Total		87,989			87,989
Estimated unguaranteed residual values for direct financing lease		14,211			14,211			8,996
Accumulated amortization of initial direct cost		393			393			275
Investment in operating lease equipment - net [Abstract]
Cost of equipment under operating leases		23,927			23,927			21,532
Accumulated depreciation		(11,462)			(11,462)			(10,139)
Investment in operating lease equipment - net	[1]	12,465			12,465			11,393
Unguaranteed residual value of operating lease equipment net		3,006			3,006			2,906
Future scheduled minimum lease rental payments [Abstract]
Remainder of Year ending March 31, 2020		2,507			2,507
Year ending March 31, 2021		3,815			3,815
Year ending March 31, 2022		2,555			2,555
Year ending March 31, 2023		1,455			1,455
Year ending March 31, 2024 and thereafter		443			443
Total		10,775			10,775
Collateral for non-recourse notes payable - Finance receivables		85,200			85,200			50,200
Collateral for non-recourse notes payable - Operating leases		8,400			8,400			7,800
Gain on sale of financing receivables		4,100		1,200	7,500		2,500
Proceeds from sale of financing receivables		95,100		47,200	172,000		94,000
Contract liabilities - servicing of financial assets		400			400			400
Maximum potential future payments related guarantees		300			300
Notes Receivables [Member]
Financing Receivables [Abstract]
Minimum payments		78,483			78,483			40,563
Estimated unguaranteed residual value		0	[2]		0	[2]		0	[3]
Initial direct costs, net of amortization		644	[4]		644	[4]		377	[5]
Unearned income		0			0			0
Reserve for credit losses		(520)	[6]	(483)	(520)	[6]	(483)	(505)	[6]	(486)
Total, net		78,607			78,607			40,435
Reported as [Abstract]
Current		59,603			59,603			30,852
Long-term		19,004			19,004			9,583
Total, net		78,607			78,607			40,435
Lease-Related Receivables [Member]
Financing Receivables [Abstract]
Minimum payments		87,989			87,989			64,201
Estimated unguaranteed residual value		20,640	[2]		20,640	[2]		14,639	[3]
Initial direct costs, net of amortization		284	[4]		284	[4]		332	[5]
Unearned income		(11,327)			(11,327)			(7,671)
Reserve for credit losses		(500)	[6]	$ (598)	(500)	[6]	$ (598)	(530)	[6]	$ (640)
Total, net		97,086			97,086			70,971
Reported as [Abstract]
Current		49,043			49,043			32,914
Long-term		48,043			48,043			38,057
Total, net		97,086			97,086			70,971
Financing Receivables [Member]
Financing Receivables [Abstract]
Minimum payments		166,472			166,472			104,764
Estimated unguaranteed residual value		20,640	[2]		20,640	[2]		14,639	[3]
Initial direct costs, net of amortization		928	[4]		928	[4]		709	[5]
Unearned income		(11,327)			(11,327)			(7,671)
Reserve for credit losses	[6]	(1,020)			(1,020)			(1,035)
Total, net		175,693			175,693			111,406
Reported as [Abstract]
Current		108,646			108,646			63,766
Long-term		67,047			67,047			47,640
Total, net		$ 175,693			$ 175,693			$ 111,406

[1] These totals include estimated unguaranteed residual values of $3,006 thousand and $2,906 thousand as of September 30, 2019 and March 31, 2019, respectively.

[2] Includes estimated unguaranteed residual values of $14,211 thousand for sales type leases, which have been sold and accounted for as sales.

[3] Includes $8,996 thousand for the estimated residual values of sales type leases and direct financing leases for which we sold the financing assets.

[4] Initial direct costs are shown net of amortization of $393 thousand.

[5] Initial direct costs are shown net of amortization of $275 thousand.

[6] For details on reserve for credit losses, refer to Note 7, “Reserves for Credit Losses.”