Revenue from Contracts with Customers - Contract Liabilities Table (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Change in Contracts with Customer, Liability [Roll Forward]
Balance at December 31, 2017	$ 0
Cumulative effect of adopting Topic 606	120,717
Cash received or receivable, excluding revenues recognized during the period	28,538
Revenues recognized during the period that were included in the adoption effect	(1,027)
Balance at March 31, 2018	148,228
Contract liabilities at March 31, 2018
Accrued liabilities		$ 22,024	$ 0
Other liabilities		126,204
Total contract liabilities from contracts with customers	$ 0	$ 148,228	$ 0