Consolidated Statements of Cash Flows (Parenthetical) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)
Net distributions to (contributions from) Anadarko of other assets	$ (3,189)	[1]
Equipment [Member]
Net distributions to (contributions from) Anadarko of other assets	(1,400)
Other [Member]
Net distributions to (contributions from) Anadarko of other assets	$ (1,800)

[1] Includes $(1.4) million related to pipe and equipment purchases and $(1.8) million related to other assets for the year ended December 31, 2017. See Note 5.