Consolidated Statement of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows From Operating Activities
Net Income and Comprehensive Income	$ 117,383	$ 50,311
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities
Depreciation and Amortization	8,483	6,652
Deferred Income Taxes	0	28,288
Income from Equity Method Investee	(821)	0
Unit-Based Compensation	581	0
Other Adjustments for Noncash Items Included in Income	288	132
Changes in Operating Assets and Liabilities
Increase in Accounts Receivable	(7,273)	(4,294)
Increase (Decrease) in Accounts Payable	5,816	(476)
Other Operating Assets and Liabilities, Net	(100)	(40)
Net Cash Provided by Operating Activities	124,357	80,573
Cash Flows From Investing Activities
Additions to Property, Plant and Equipment	(185,442)	(23,720)
Additions to Investments	(68,504)	(147)
Distributions from Cost Method Investee	728	963
Proceeds from Asset Sale — Affiliate	0	1,850
Net Cash Used in Investing Activities	(253,218)	(21,054)
Cash Flows From Financing Activities
Distributions to Parent	0	(42,480)
Contributions from Parent	0	1,036
Proceeds from the IPO, Net of Offering Costs	0	301,461
Distribution to Noble Subsequent to the IPO	0	(296,820)
Revolving Credit Facility Origination Fees and Expenses Paid	0	(1,859)
Distributions to Noncontrolling Interests	(19,849)	0
Cash Contributions from Noncontrolling Interests	52,806	0
Borrowings Under Revolving Credit Facility	245,000	0
Repayment of Revolving Credit Facility	(45,000)	0
Net Proceeds from Private Placement	138,084	0
Distribution to Noble for Contributed Assets	(245,000)	0
Distributions to Unitholders	(42,937)	0
Repayment of Capital Lease Obligation	(982)	0
Net Cash Provided by (Used in) Financing Activities	82,122	(38,662)
(Decrease) Increase in Cash and Cash Equivalents	(46,739)	20,857
Cash and Cash Equivalents at Beginning of Period	57,421	26,612
Cash and Cash Equivalents at End of Period	$ 10,682	$ 47,469