Derivative Instruments - Summary of Interest Rate Swap Agreements (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Derivative [Line Items]
Notional Value	$ 450,000
Percentage of Term Loan Outstanding	28.00%
Designated as Hedging Instrument [Member] \| Interest Rate Swap Agreement One [Member] \| Cash Flow Hedges [Member]
Derivative [Line Items]
Maturity Date	Jun. 01, 2023
Rate	2.81%
Notional Value	$ 100,000
Debt Instrument Hedged	Term Loan
Percentage of Term Loan Outstanding	6.00%
Designated as Hedging Instrument [Member] \| Interest Rate Swap Agreement Two [Member] \| Cash Flow Hedges [Member]
Derivative [Line Items]
Maturity Date	Jun. 01, 2025
Rate	2.87%
Notional Value	$ 200,000
Debt Instrument Hedged	Term Loan
Percentage of Term Loan Outstanding	13.00%
Designated as Hedging Instrument [Member] \| Interest Rate Swap Agreement Three [Member] \| Cash Flow Hedges [Member]
Derivative [Line Items]
Maturity Date	Jun. 01, 2024
Rate	2.81%
Notional Value	$ 50,000
Debt Instrument Hedged	Term Loan
Percentage of Term Loan Outstanding	3.00%
Designated as Hedging Instrument [Member] \| Interest Rate Swap Agreement Four [Member] \| Cash Flow Hedges [Member]
Derivative [Line Items]
Maturity Date	Jun. 01, 2025
Rate	2.87%
Notional Value	$ 50,000
Debt Instrument Hedged	Term Loan
Percentage of Term Loan Outstanding	3.00%
Designated as Hedging Instrument [Member] \| Interest Rate Swap Agreement Five [Member] \| Cash Flow Hedges [Member]
Derivative [Line Items]
Maturity Date	Jun. 01, 2025
Rate	2.85%
Notional Value	$ 50,000
Debt Instrument Hedged	Term Loan
Percentage of Term Loan Outstanding	3.00%

Covia Holdings Corp 10-Q