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Consolidated Statements of Operations (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income Statement [Abstract]      
General and administrative expenses, equity-based compensation $ 15,897 $ 13,588 $ 13,314
Unrealized gain (loss) on derivatives $ (28,576) $ 29,345 $ (11,523)