Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment, at Cost	$ 2,053,503	$ 2,006,995
Less: Accumulated Depreciation and Amortization	(260,734)	(244,038)
Total Property, Plant and Equipment, Net	1,792,769	1,762,957
Gathering and Processing Systems
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment, at Cost	1,840,973	1,795,957
Construction in-progress	99,900	98,400
Fresh Water Delivery Systems
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment, at Cost	95,886	96,004
Construction-in-Progress
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment, at Cost	116,644	115,034
Equipment Reserved For Future Use
Property, Plant and Equipment [Line Items]
Construction in-progress	$ 15,300	$ 15,400