Organization, Basis of Presentation, and Significant Accounting Policies - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Accounting Policies [Abstract]
Interest paid	$ 7,577	$ 35,127
Income taxes paid	853	2,195
Decrease in accrued capital expenditures	$ 1,434	$ 1,820