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Revenue - Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Disaggregation of Revenue
Revenue from contracts with customers		$ 553,521
Amortization of customer relationships	$ (28,863)	(39,178)
Total revenue	243,795	553,521
Gathering-low pressure
Disaggregation of Revenue
Revenue from contracts with customers	80,741	175,375
Gathering-high pressure
Disaggregation of Revenue
Revenue from contracts with customers	51,434	108,466
Compression
Disaggregation of Revenue
Revenue from contracts with customers	43,544	94,337
Fresh water delivery
Disaggregation of Revenue
Revenue from contracts with customers	50,434	104,638
Wastewater treatment
Disaggregation of Revenue
Revenue from contracts with customers	10,617	25,059
Other fluid handling
Disaggregation of Revenue
Revenue from contracts with customers	35,888	84,824
Cost plus 3%
Disaggregation of Revenue
Revenue from contracts with customers	35,888	84,824
Gathering And Processing
Disaggregation of Revenue
Amortization of customer relationships	(16,363)	(19,266)
Gathering And Processing | Fixed Fee
Disaggregation of Revenue
Revenue from contracts with customers	175,719	378,178
Water Handling and Treatment
Disaggregation of Revenue
Amortization of customer relationships	(12,500)	(19,912)
Water Handling and Treatment | Fixed Fee
Disaggregation of Revenue
Revenue from contracts with customers	$ 61,051	$ 129,697

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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