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Details Of Certain Accounts - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Accrued payroll and related benefits $ 31,417 $ 43,079
Investee losses in excess of investment (Note 5) 4,069 5,125
Deferred revenue (Note 12) 11,568 10,103
Derivative liability (Note 21) 1,002 9,311
Other 14,333 17,976
Total accrued liabilities $ 62,389 $ 85,594