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RELATED PARTY TRANSACTIONS AND FEES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Related Party Transactions [Abstract]      
Advisory fees $ 737 $ 685 $ 660
Net income fees 357 631 250
Related party fees 1,094 1,316 910
Cost reimbursements 260 284 234
Interest received $ 4,780 $ 3,086 $ 1,903