Revenue - Disaggregation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue
Amortization of customer relationships	$ (70,672)	$ (70,672)	$ (57,010)
Total revenue	898,202	900,719	792,588
Gathering And Processing.
Disaggregation of Revenue
Amortization of customer relationships	(37,086)	(37,086)	(29,850)
Water Handling.
Disaggregation of Revenue
Amortization of customer relationships	(33,586)	(33,586)	(27,160)
Fixed Fee | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	761,737	759,459	543,538
Fixed Fee | Water Handling.
Disaggregation of Revenue
Total operating revenues	137,278	158,707	182,691
Cost plus 3% | Water Handling.
Disaggregation of Revenue
Total operating revenues	65,007	90,478	123,030
Cost of service fee | Water Handling.
Disaggregation of Revenue
Total operating revenues	16,852	10,747	339
Gathering-low pressure | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	354,941	353,491	254,350
Gathering-low pressure rebate | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	(12,000)	(48,000)
Gathering-high pressure | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	207,804	210,821	151,283
Compression | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	198,992	195,147	137,905
Fresh water delivery | Water Handling.
Disaggregation of Revenue
Total operating revenues	137,278	158,707	157,633
Wastewater treatment | Water Handling.
Disaggregation of Revenue
Total operating revenues			25,058
Other fluid handling | Water Handling.
Disaggregation of Revenue
Total operating revenues	$ 81,859	$ 101,225	$ 123,369