RESERVES FOR CREDIT LOSSES (Details) (USD $)	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Mar. 31, 2013
Activity in reserves for credit losses [Roll Forward]
Balance	$ 5,131,000	$ 5,606,000
Provision for bad debts, net of recoveries	(67,000)	(216,000)
Write-offs and other	(88,000)	(36,000)
Balance	4,976,000	5,354,000
Minimum lease payments: [Abstract]
Reserve for credit losses	4,976,000	5,354,000
Total receivable	197,168,000		192,254,000
Accounts Receivable [Member]
Activity in reserves for credit losses [Roll Forward]
Balance	1,147,000	1,307,000
Provision for bad debts, net of recoveries	18,000	(222,000)
Write-offs and other	(88,000)	(33,000)
Balance	1,077,000	1,052,000
Minimum lease payments: [Abstract]
Reserve for credit losses	1,077,000	1,052,000
Notes Receivable [Member]
Activity in reserves for credit losses [Roll Forward]
Balance	3,137,000	2,963,000
Provision for bad debts, net of recoveries	31,000	145,000
Write-offs and other	0	0
Balance	3,168,000	3,108,000
Reserve for credit losses: [Abstract]
Ending balance: collectively evaluated for impairment	341,000		310,000
Ending balance: individually evaluated for impairment	2,827,000		2,827,000
Ending balance	3,168,000		3,137,000
Minimum lease payments: [Abstract]
Ending balance: collectively evaluated for impairment	48,759,000		31,793,000
Ending balance: individually evaluated for impairment	3,237,000		3,237,000
Ending balance	51,996,000		35,030,000
Reserve for credit losses	3,168,000	3,108,000
Lease-Related Receivables [Member]
Activity in reserves for credit losses [Roll Forward]
Balance	845,000	1,336,000
Provision for bad debts, net of recoveries	(116,000)	(139,000)
Write-offs and other	0	(3,000)
Balance	729,000	1,194,000
Reserve for credit losses: [Abstract]
Ending balance: collectively evaluated for impairment	628,000		747,000
Ending balance: individually evaluated for impairment	101,000		98,000
Ending balance	729,000		845,000
Minimum lease payments: [Abstract]
Ending balance: collectively evaluated for impairment	63,488,000		64,246,000
Ending balance: individually evaluated for impairment	388,000		368,000
Ending balance	63,876,000		64,614,000
Reserve for credit losses	729,000	1,194,000
Large law firm [Member]
Activity in reserves for credit losses [Roll Forward]
Balance	2,800,000
Minimum lease payments: [Abstract]
Notes Receivable	3,400,000
Reserve for credit losses	2,800,000
Customer [Member]
Activity in reserves for credit losses [Roll Forward]
Balance			2,800,000
Balance			2,800,000
Minimum lease payments: [Abstract]
Notes Receivable			3,400,000
Reserve for credit losses			$ 2,800,000