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Supplemental Disclosures Supplemental Disclosures - Restricted Cash Reconciliation (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Jun. 30, 2019
Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]        
Cash $ 20,573 $ 40,024 $ 59,950  
Restricted cash 22,935 25,104 24,812  
Total cash and restricted cash $ 43,508 $ 65,128 $ 84,762 $ 83,984