Ecovyst, Inc. Annual report pursuant to Section 13 and 15(d)

Financial Instruments - Fair Value (Details) - Derivatives designated as cash flow hedges: - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Derivative assets:
Total derivative assets	$ 1,080	$ 0
Derivative liabilities:
Total derivative liabilities	1,288	3,704
Cash flow hedging \| Accrued liabilities \| Interest rate caps
Derivative liabilities:
Total derivative liabilities	1,288	1,954
Cash flow hedging \| Other long-term liabilities \| Interest rate caps
Derivative liabilities:
Total derivative liabilities	0	1,750
Cash flow hedging \| Other long-term assets \| Interest rate caps
Derivative assets:
Total derivative assets	$ 1,080	$ 0