RESERVES FOR CREDIT LOSSES (Details) (USD $)	9 Months Ended			9 Months Ended			9 Months Ended			9 Months Ended				12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2012	Dec. 31, 2012 Accounts Receivable [Member]	Dec. 31, 2011 Accounts Receivable [Member]	Mar. 31, 2012 Accounts Receivable [Member]	Dec. 31, 2012 Notes Receivable [Member]	Dec. 31, 2011 Notes Receivable [Member]	Mar. 31, 2012 Notes Receivable [Member]	Dec. 31, 2012 Lease-Related Receivables [Member]	Dec. 31, 2011 Lease-Related Receivables [Member]	Mar. 31, 2012 Lease-Related Receivables [Member]	Dec. 31, 2012 Large law firm [Member]	Mar. 31, 2012 Customer [Member]
Activity in reserves for credit losses [Roll Forward]
Balance	$ 5,606,000	$ 2,771,000		$ 1,307,000	$ 944,000		$ 2,963,000	$ 94,000		$ 1,336,000	$ 1,733,000		$ 2,800,000
Provision for bad debts, net of recoveries	(267,000)	430,000		(128,000)	387,000		189,000	152,000		(328,000)	(109,000)
Write-offs and other	(97,000)	(264,000)		(94,000)	(262,000)		0	0		(3,000)	(2,000)
Balance	5,242,000	2,939,000		1,085,000	1,071,000		3,152,000	246,000		1,005,000	1,622,000		2,800,000	2,600,000
Reserve for credit losses: [Abstract]
Ending balance: collectively evaluated for impairment							325,000		298,000	919,000		1,314,000
Ending balance: individually evaluated for impairment							2,827,000		2,665,000	86,000		22,000
Ending balance							3,152,000		2,963,000	1,005,000		1,336,000
Minimum lease payments: [Abstract]
Ending balance: collectively evaluated for impairment							21,631,000		22,944,000	77,133,000		99,545,000
Ending balance: individually evaluated for impairment							3,284,000		4,356,000	249,000		202,000
Ending balance							24,915,000		27,300,000	77,382,000		99,747,000
Notes Receivable													3,400,000	4,200,000
Reserve for credit losses	5,242,000	2,939,000		1,085,000	1,071,000		3,152,000	246,000		1,005,000	1,622,000		2,800,000	2,600,000
Accounts receivable reserve														300,000
Total receivable	221,917,000		174,599,000			900,000								5,100,000
Estimated loss on receivable														$ 2,900,000