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Details Of Certain Accounts - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Accrued payroll and related benefits $ 17,469 $ 31,417
Investee losses in excess of investment (Note 4) 2,673 4,069
Deferred revenue (Note 10) 11,376 11,568
Derivative liability (Note 19) 26 1,002
Other 13,683 14,333
Total accrued liabilities $ 45,227 $ 62,389