DISCONTINUED OPERATIONS - Carrying Value of Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets held for sale
Total assets, net	$ 22,175	$ 0
Liabilities of assets held for sale
Total liabilities	$ 28,766	$ 0
Lending
Assets held for sale
Commercial real estate loans, net			$ 52,822
Cash and cash equivalents			821
Restricted cash			1,076
Accounts receivable, net			684
Other assets			23
Total assets, net			55,426
Liabilities of assets held for sale
Debt			25,941
Accounts payable and accrued expenses			503
Other liabilities			1,395
Total liabilities			27,839
Carrying value			$ 27,587