Revenue - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue
Amortization of customer relationships	$ (17,668)	$ (17,668)
Total revenue	218,491	224,121
Gathering And Processing.
Disaggregation of Revenue
Amortization of customer relationships	(9,271)	(9,271)
Water Handling.
Disaggregation of Revenue
Amortization of customer relationships	(8,397)	(8,397)
Fixed Fee | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	194,443	185,161
Fixed Fee | Water Handling.
Disaggregation of Revenue
Total operating revenues	32,439	37,358
Cost plus 3% | Water Handling.
Disaggregation of Revenue
Total operating revenues	15,638	15,350
Cost of service fee | Water Handling.
Disaggregation of Revenue
Total operating revenues	5,639	3,920
Gathering-low pressure | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	89,437	86,306
Gathering-low pressure rebate | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	(12,000)
Gathering-high pressure | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	53,394	50,718
Compression | Gathering And Processing.
Disaggregation of Revenue
Total operating revenues	51,612	48,137
Fresh water delivery | Water Handling.
Disaggregation of Revenue
Total operating revenues	32,044	37,358
Other fluid handling | Water Handling.
Disaggregation of Revenue
Total operating revenues	$ 21,672	$ 19,270