Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment
Total Property, Plant and Equipment, at Cost	$ 2,063,911	$ 2,006,995
Accumulated Depreciation and Amortization	(297,181)	(244,038)
Total Property, Plant and Equipment, Net	1,766,730	1,762,957
Gathering and Processing Systems
Property, Plant and Equipment
Total Property, Plant and Equipment, at Cost	1,905,444	1,795,957
Construction in-progress	49,400	98,400
Fresh Water Delivery Systems
Property, Plant and Equipment
Total Property, Plant and Equipment, at Cost	95,832	96,004
Construction-in-Progress
Property, Plant and Equipment
Total Property, Plant and Equipment, at Cost	62,635	115,034
Equipment Reserved For Future Use
Property, Plant and Equipment
Construction in-progress	$ 11,600	$ 15,400