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Redeemable Noncontrolling Interest - Schedule of Redeemable Noncontrolling Interest (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]        
Beginning balance January 1, 2019     $ 542,020  
Net income attributable to noncontrolling interest, including the contractual accretion of the put options $ 7,125 $ 0 21,375 $ 0
Distribution to noncontrolling interest     (501)  
Other     500  
Ending balance September 30, 2019 $ 563,394   $ 563,394