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Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Cash and Cash Equivalents [Abstract]        
Cash and cash equivalents $ 75,237 $ 137,060 $ 33,108 $ 37,575
Restricted cash 136,867 128,017 128,621 126,544
Total cash, cash equivalents and restricted cash $ 212,104 $ 265,077 $ 161,729 $ 164,119