Revenue from Contracts with Customers - Contract Liabilities Table (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Change in Contracts with Customer, Liability [Roll Forward]
Balance at December 31, 2019	$ 222,274
Cash received or receivable, excluding revenues recognized during the period	11,203
Revenues recognized that were included in the contract liability balance at the beginning of the period	(8,893)
Balance at March 31, 2020	224,584
Contract liabilities at March 31, 2020
Accrued liabilities		$ 9,120	$ 19,659
Other liabilities		215,464
Total contract liabilities from contracts with customers	$ 224,584	$ 224,584	$ 222,274