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Financing Arrangement - Financing arrangement activity (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Schedule of Joint Ventures [Line Items]        
Interest (income) expense $ 2,954 $ (32,807) $ 4,273 $ (77,050)
Joint Venture | Financing Arrangement        
Schedule of Joint Ventures [Line Items]        
Distributions equal to the partner's share of net (loss) income (1,193) (181) (2,425) 1,283
Distributions in excess of the partner's share of net income 5,586 281 9,000 2,958
Adjustment to fair value of financing arrangement obligation (1,439) (32,907) (2,302) (81,291)
Interest (income) expense $ 2,954 $ (32,807) $ 4,273 $ (77,050)