Ecovyst, Inc. Quarterly report pursuant to Section 13 or 15(d)

Fair Value (Details) - Derivatives designated as hedging instrument - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivative assets:
Total derivative assets	$ 285	$ 0
Derivative liabilities:
Total derivative liabilities	3,023	3,704
Cash flow hedging \| Other long-term assets \| Interest rate caps
Derivative assets:
Total derivative assets	285	0
Cash flow hedging \| Accrued liabilities \| Interest rate caps
Derivative liabilities:
Total derivative liabilities	1,974	1,954
Cash flow hedging \| Other long-term liabilities \| Interest rate caps
Derivative liabilities:
Total derivative liabilities	$ 1,049	$ 1,750