Ecovyst, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Cover
- Cover Page
Financial Statements
Notes to Financial Statements
Accounting Policies
- Background and Basis of Presentation (Policies)
Notes Tables
Notes Details

Stockholders' Equity - Narrative (Details)

v3.25.1

Stockholders' Equity - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended
	Apr. 27, 2022	Mar. 31, 2025	Mar. 31, 2024	Nov. 30, 2025
Equity, Class of Treasury Stock [Line Items]
Shares acquired (in shares)		0	0
Remaining authorized repurchase amount		$ 229,594
Shares withheld for tax withholding obligation (in shares)		189,446	128,801
Fair value of shares withheld for tax payments		$ 1,477	$ 1,218
Cash flow hedging
Equity, Class of Treasury Stock [Line Items]
Current notional amount of instruments in effect		625,000
Interest Rate Cap Three \| Cash flow hedging
Equity, Class of Treasury Stock [Line Items]
Current notional amount of instruments in effect		$ 200,000
Forecast \| Interest Rate Cap Three \| Cash flow hedging
Equity, Class of Treasury Stock [Line Items]
Current notional amount of instruments in effect				$ 450,000
Stock Repurchase Program 2022
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount	$ 450,000
Stock repurchase program, period (in years)	4 years

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Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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