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Variable Interest Entities (Tables)

9 Months Ended

Sep. 30, 2025

Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract]

Schedule of assets and liabilities

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​	​	​	​	​	​	​	​
​	​	September 30,		​	December 31,		​
​	​	2025			2024		​
Assets (liabilities):		(in thousands)
Cash and cash equivalents	​	$	4,266	​	$	5,154	​
Trade receivables	​		12,587	​		11,209	​
Total property, plant and equipment, net	​		360,758	​		373,093	​
Accounts payable	​	​	(240)	​	​	(221)	​
Due to affiliates	​		(113)	​	​	—	​
Accrued taxes other than income taxes	​		(878)	​	​	(870)	​

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- Definition

Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 04
-Paragraph a
-Publisher SEC

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-3

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- References

No definition available.

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