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Panda Interests - Schedule of Profits Interest (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2020
Dec. 31, 2019
Panda Interests    
Panda units granted   26.2
Fair value per unit on grant date   $ 67,690
Grant date fair value   1,773
Change in fair value of Panda interests $ 148 198
Fair value $ 2,119 $ 1,971