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Condensed Consolidated Statements of Cash Flows - Supplemental Information - (Reconciliation of Cash) (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Sep. 30, 2019
Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]        
Cash and cash equivalents $ 36,872 $ 15,603    
Restricted cash 1,847 2,005    
Total cash, cash equivalents, and restricted cash $ 38,719 $ 17,608 $ 14,664 $ 2,695