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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

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Variable Interest Entities - Bal Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Assets (liabilities):
Cash and cash equivalents	$ 94,481		$ 136,962
Trade receivables	169,883	$ 177,659	166,829	$ 198,647	$ 226,436	$ 282,622
Total property, plant and equipment, net	2,163,652		2,166,270
Accounts payable	(103,757)		(98,188)
Accrued taxes other than income taxes	(24,566)		(21,051)
AllDale I and II
Assets (liabilities):
Cash and cash equivalents	4,266		5,154
Trade receivables	12,587		11,209
Total property, plant and equipment, net	360,758		373,093
Accrued taxes other than income taxes	(878)		(870)
AllDale I and II \| Non-related
Assets (liabilities):
Accounts payable	(240)		(221)
AllDale I and II \| Affiliates
Assets (liabilities):
Accounts payable	$ (113)		$ 0