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

Related Party Transactions (Details)

v3.10.0.1

Related Party Transactions (Details) - USD ($)				12 Months Ended
Related Party Transactions (Details) - USD ($)	Dec. 11, 2017	Oct. 03, 2017	May 04, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 29, 2014
Related Party Transaction
Management advisory fees				$ 0	$ 3,777,000	$ 3,584,000
Debt extinguishment costs				0	47,875,000	0
Affiliated Entity
Related Party Transaction
Annual monitoring fee							$ 5,000,000
Corporate Joint Venture
Related Party Transaction
Purchases from related party				645,000	2,475,000	1,191,000
INEOS Capital Partners
Related Party Transaction
Related party sales				5,587,000	8,396,000
Unsecured Debt \| Floating Rate Senior Unsecured Notes due 2022
Related Party Transaction
Debt instrument face amount			$ 525,000,000
Debt extinguishment costs	$ 6,043,000	$ 32,284,000
Unsecured Debt \| Floating Rate Senior Unsecured Notes due 2022 \| Board of Directors
Related Party Transaction
Debt instrument face amount			$ 4,000,000
Debt extinguishment costs					338,000
Payment for financing expenses					362,000	300,000
Unsecured Debt \| Floating Rate Senior Unsecured Notes due 2022 \| LIBOR
Related Party Transaction
Variable rate on spread			10.75%
Debt instrument, interest rate floor			1.00%
Unsecured Debt \| Senior Unsecured Notes due 2025
Related Party Transaction
Debt instrument face amount	$ 300,000,000
Operating Lease Rental Payments \| Corporate Joint Venture
Related Party Transaction
Related party sales				295,000	295,000	187,000
Manufacturing Costs \| Corporate Joint Venture
Related Party Transaction
Related party sales				16,869,000	17,470,000	10,707,000
Services \| Corporate Joint Venture
Related Party Transaction
Related party sales				12,727,000	12,248,000	8,169,000
Product Demonstration Costs \| Corporate Joint Venture
Related Party Transaction
Related party sales				$ 1,768,000	$ 2,175,000	$ 1,663,000

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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