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Revenue - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Revenue - Disaggregation (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue
Amortization of customer relationships	$ (17,606)	$ (8,534)	$ (35,211)	$ (10,315)
Gain on sale of assets-third party	(240)		(240)
Total revenue	219,736	255,618	463,444	309,726
Gathering And Processing
Disaggregation of Revenue
Amortization of customer relationships	(9,239)	(2,402)	(18,477)	(2,903)
Water Handling
Disaggregation of Revenue
Amortization of customer relationships	(8,367)	(6,132)	(16,734)	(7,412)
Fixed Fee \| Gathering And Processing
Disaggregation of Revenue
Revenue	185,991	168,925	361,120	202,459
Fixed Fee \| Water Handling
Disaggregation of Revenue
Revenue	36,900	55,440	102,718	68,645
Cost plus 3% \| Water Handling
Disaggregation of Revenue
Revenue	23,742	39,787	54,687	48,937
Cost of service fee \| Water Handling
Disaggregation of Revenue
Revenue	2,709		4,130
Gathering-low pressure \| Gathering And Processing
Disaggregation of Revenue
Revenue	85,791	78,807	166,939	94,634
Gathering-low pressure rebate \| Gathering And Processing
Disaggregation of Revenue
Revenue	(12,000)		(24,000)
Gathering-high pressure \| Gathering And Processing
Disaggregation of Revenue
Revenue	51,577	47,749	100,490	57,032
Compression \| Gathering And Processing
Disaggregation of Revenue
Revenue	48,623	42,369	93,691	50,793
Fresh water delivery \| Water Handling
Disaggregation of Revenue
Revenue	36,900	43,429	102,718	54,204
Wastewater treatment \| Water Handling
Disaggregation of Revenue
Revenue		12,011		14,441
Other fluid handling \| Water Handling
Disaggregation of Revenue
Revenue	$ 26,451	$ 39,787	$ 58,817	$ 48,937