DISCONTINUED OPERATIONS - Assets and Liabilties (Details) - USD ($)	1 Months Ended	3 Months Ended
	Dec. 31, 2015	Mar. 31, 2016	Mar. 31, 2015
Assets held for sale
Total assets held for sale, net	$ 128,992,000	$ 150,927,000
Liabilities associated with assets held for sale
Total liabilities associated with assets held for sale	52,740,000	63,492,000
Lending division | Discontinued Operations, Held-for-sale or Disposed of by Sale
DISCONTINUED OPERATIONS
Transaction costs from sales		9,000	$ 163,000
Lending division | Held for sale
Assets held for sale
Loans receivable, net	103,440,000	126,726,000
Cash and cash equivalents	15,936,000	13,347,000
Restricted cash	819,000	1,869,000
Accounts receivable and interest receivable, net	691,000	1,060,000
Other intangible assets	2,957,000	2,957,000
Other assets	5,149,000	4,968,000
Total assets held for sale, net	128,992,000	150,927,000
Liabilities associated with assets held for sale
Debt	47,121,000	55,446,000
Accounts payable and accrued expenses	2,302,000	2,843,000
Other liabilities	3,317,000	5,203,000
Total liabilities associated with assets held for sale	52,740,000	$ 63,492,000
Lending division | Commercial mortgage loans | Sold
DISCONTINUED OPERATIONS
Gain on disposition of assets held for sale	$ 5,151,000