FINANCING RECEIVABLES AND OPERATING LEASES (Details) - USD ($) $ in Thousands		3 Months Ended
		Jun. 30, 2018		Jun. 30, 2017	Mar. 31, 2018		Mar. 31, 2017
Financing Receivables [Abstract]
Reserve for credit losses		$ (2,842)		$ (2,474)	$ (2,664)		$ (5,392)
Reported as [Abstract]
Current		70,619			69,936
Estimated unguaranteed residual values for direct financing lease		6,271			6,004
Accumulated amortization of initial direct cost		381			341
Investment in operating lease equipment - net [Abstract]
Cost of equipment under operating leases		16,265			15,683
Accumulated depreciation		(6,789)			(8,729)
Investment in operating lease equipment - net	[1]	9,476			6,954
Unguaranteed residual value of operating lease equipment net		2,467			1,921
Collateral for non-recourse notes payable - Finance receivables		52,900			52,000
Collateral for non-recourse notes payable - Operating leases		7,100			5,300
Gain on sale of financing receivables		1,300		2,300
Proceeds from sale of financing receivables		46,900		85,800
Contract liabilities - servicing of financial assets		500			500
Maximum potential future payments related guarantees		400
Notes Receivables [Member]
Financing Receivables [Abstract]
Minimum payments		53,777			62,992
Estimated unguaranteed residual value		0	[2]		0	[3]
Initial direct costs, net of amortization		499	[4]		375	[5]
Unearned income		0			0
Reserve for credit losses		(486)	[6]	(480)	(486)	[6]	(3,434)
Total, net		53,790			62,881
Reported as [Abstract]
Current		34,408			39,993
Long-term		19,382			22,888
Total, net		53,790			62,881
Lease-Related Receivables [Member]
Financing Receivables [Abstract]
Minimum payments		74,522			65,943
Estimated unguaranteed residual value		12,031	[2]		11,226	[3]
Initial direct costs, net of amortization		439	[4]		334	[5]
Unearned income		(8,889)			(8,251)
Reserve for credit losses		(696)	[6]	$ (716)	(640)	[6]	$ (679)
Total, net		77,407			68,612
Reported as [Abstract]
Current		36,211			29,943
Long-term		41,196			38,669
Total, net		77,407			68,612
Financing Receivables [Member]
Financing Receivables [Abstract]
Minimum payments		128,299			128,935
Estimated unguaranteed residual value		12,031	[2]		11,226	[3]
Initial direct costs, net of amortization		938	[4]		709	[5]
Unearned income		(8,889)			(8,251)
Reserve for credit losses	[6]	(1,182)			(1,126)
Total, net		131,197			131,493
Reported as [Abstract]
Current		70,619			69,936
Long-term		60,578			61,557
Total, net		$ 131,197			$ 131,493

[1] Includes estimated unguaranteed residual values of $2,467 thousand and $1,921 thousand as of June 30, 2018 and March 31, 2018, respectively.

[2] Includes estimated unguaranteed residual values of $6,271 thousand for direct financing leases, which have been sold and accounted for as sales.

[3] Includes estimated unguaranteed residual values of $6,004 thousand for direct financing leases which have been sold and accounted for as sales.

[4] Initial direct costs are shown net of amortization of $381 thousand.

[5] Initial direct costs are shown net of amortization of $341 thousand.

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