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CLOSURE AND POST-CLOSURE LIABILITIES - Anticipated Payments (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Environmental Property Sale, Disposal or Abandonment Costs
2026	$ 10,290
2027	13,906
2028	20,063
2029	8,738
2030	1,723
Thereafter	294,466
Undiscounted closure and post-closure liabilities	349,186
Less: Discount at credit-adjusted risk-free rate	(115,489)
Less: Undiscounted estimated closure and post-closure liabilities relating to airspace not yet consumed	(98,369)
Present value of closure and post-closure liabilities	$ 135,328	$ 129,788	$ 118,600

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- Definition

Anticipated Payment for Asset Retirement Obligations, After Year Five

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- Definition

Anticipated Payment for Asset Retirement Obligations year Five

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- Definition

Anticipated Payment for Asset Retirement Obligations year Four

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- Definition

Anticipated Payment for Asset Retirement Obligations year One

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Anticipated Payment for Asset Retirement Obligations year Three

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- Definition

Anticipated Payment for Asset Retirement Obligations year Two

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- Definition

Discount Reserves

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- Definition

Reserves to be Provided Over Remaining Site Lives

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- Definition

Undiscounted Closure and Post-Closure Liabilities

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- Definition

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481999/410-20-25-4

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 410
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481850/410-20-50-1

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