RESERVES FOR CREDIT LOSSES, Disaggregated Based on Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2019		Mar. 31, 2019		Dec. 31, 2018	Mar. 31, 2018
Reserve for credit losses [Abstract]
Ending balance	$ 2,812		$ 2,614		$ 2,612	$ 2,664
Accounts Receivable [Member]
Reserve for credit losses [Abstract]
Ending balance	1,382		1,579		1,567	1,538
Notes Receivable [Member]
Reserve for credit losses [Abstract]
Ending balance: collectively evaluated for impairment	726		443
Ending balance: individually evaluated for impairment	62		62
Ending balance	788	[1]	505	[1]	536	486
Minimum payments [Abstract]
Ending balance: collectively evaluated for impairment	60,145		40,501
Ending balance: individually evaluated for impairment	89		62
Ending balance	60,234		40,563
Lease-Related Receivables [Member]
Reserve for credit losses [Abstract]
Ending balance: collectively evaluated for impairment	642		530
Ending balance: individually evaluated for impairment	0		0
Ending balance	642	[1]	530	[1]	$ 509	$ 640
Minimum payments [Abstract]
Ending balance: collectively evaluated for impairment	81,450		64,201
Ending balance: individually evaluated for impairment	0		0
Ending balance	$ 81,450		$ 64,201

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