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]

Cover
- Cover
- Audit Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Goodwill and Other Intangible Assets - Narratives (Details)

v3.25.4

Goodwill and Other Intangible Assets - Narratives (Details)	12 Months Ended
	Dec. 31, 2025 USD ($) segment reporting_unit	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Goodwill
Number of reporting units \| reporting_unit	1
Number of reportable segments \| segment	1
Goodwill impairment charge	$ 0
Indefinite-lived intangible assets	0	$ 0
Amortization	$ 8,626,000	8,520,000	$ 8,520,000
Non-compete agreements
Goodwill
Finite lived intangible assets useful life	5 years
Trademarks
Goodwill
Finite lived intangible assets useful life	15 years
Trade names
Goodwill
Finite lived intangible assets useful life	10 years
Minimum \| Technical know-how
Goodwill
Finite lived intangible assets useful life	10 years
Minimum \| Customer relationships
Goodwill
Finite lived intangible assets useful life	10 years
Maximum \| Technical know-how
Goodwill
Finite lived intangible assets useful life	20 years
Maximum \| Customer relationships
Goodwill
Finite lived intangible assets useful life	15 years
Cost of goods sold
Goodwill
Amortization	$ 2,165,000	2,165,000	2,165,000
Other operating expenses
Goodwill
Amortization	$ 8,626,000	$ 8,520,000	$ 8,520,000

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