Financing Arrangement - Financing arrangement activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Schedule of Joint Ventures [Line Items]
Interest income (expense)	$ 1,319	$ (44,243)
Joint Venture | Financing Arrangement
Schedule of Joint Ventures [Line Items]
Distributions equal to the partner's share of net (loss) income	(1,232)	1,464
Distributions in excess of the partner's share of net income	3,414	2,677
Adjustment to fair value of financing arrangement obligation	(863)	(48,384)
Interest income (expense)	$ 1,319	$ (44,243)