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SUPPLEMENTAL DISCLOSURES - Restricted Cash Reconciliation (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Disclosure Text Block Supplement [Abstract]        
Cash $ 44,632 $ 57,916 $ 20,573  
Restricted cash 34,576 33,467 22,935  
Total cash and restricted cash $ 79,208 $ 91,383 $ 43,508 $ 65,128