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Other Assets (Notes Receivable Due From Equity Investments) (Details) - Equity Investment - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total notes receivable due from equity investments $ 184,558 $ 201,979
Less-current portion 25,933 19,075
Long-term portion $ 158,625 $ 182,904