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RELATED PARTY TRANSACTIONS AND FEES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Related Party Transactions [Abstract]      
Advisory fees $ 768 $ 737 $ 685
Net income fees 371 357 631
Related party fees 1,139 1,094 1,316
Cost reimbursements 247 260 284
Interest received $ 3,583 $ 4,780 $ 3,086