Revenue from Contracts with Customers - Contract Assets Table (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Change in Contracts with Customer, Asset [Roll Forward]
Balance at December 31, 2017	$ 0
Cumulative effect of adopting Topic 606	5,129
Amounts transferred to Accounts receivable, net from contract assets recognized in the adoption effect	(2,494)
Additional estimated revenues recognized	3,425
Balance at March 31, 2018	6,060
Contract assets at March 31, 2018
Other current assets		$ 5,838	$ 0
Other assets		222
Total contract assets from contracts with customers	$ 0	$ 6,060	$ 0