Ecovyst, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Goodwill and Other Intangible Assets - Goodwill Rollforward (Details)

Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($)
Goodwill
Beginning balance	$ 326,589
Goodwill recognized (Note 5)	155
Ending balance	$ 326,744

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details