Revenue from Contracts with Customers - Contract Liabilities Table (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Change in Contracts with Customer, Liability [Roll Forward]
Contract liabilities balance at begining of year		$ 266,937
Cash received or receivable, excluding revenues recognized during the period	$ 26,700	60,786
Revenues recognized that were included in the contract liability balance at the beginning of the period	(5,500)	(13,553)
Cumulative catch-up adjustment for change in estimate consideration	(17,200)	(17,209)
Contract liabilities balance at end of period	296,961	296,961
Contract Liabilities [Abstract]
Accrued liabilities	22,854	22,854	$ 31,477
Other liabilities	274,107	274,107
Total contract liabilities from contracts with customers	296,961	$ 296,961	$ 266,937
Revenues recognized that were included in the contract liability balance at the beginning of the period, related to a cumulative catch-up.	$ (1,700)