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Long-term Debt - Additional Information (Detail) - USD ($)		1 Months Ended		6 Months Ended
	Nov. 30, 2018	Jul. 31, 2021	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Term loan outstanding current and non current portion				$ 521,625,000
Proceeds from long term line of credit					$ 40,000,000
Repayment of long term line of credit					40,000,000
Repayment of term loan				2,675,000	$ 2,675,000
2018 Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument face value	$ 535,000,000.0
Term loan month of maturity	2024-11
Term loan outstanding current and non current portion				$ 521,600,000
Long term debt effective interest rate percentage at a point in time				5.00%		5.10%
2018 Revolving Facility [Member]
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity	$ 40,000,000.0
Revolving credit facility month of maturity	2023-11
Line of credit outstanding current and non current portion				$ 0		$ 0
Letter of credit outstanding amount				$ 0		$ 0
2018 Revolving Facility [Member] | Covid-19 [Member]
Debt Instrument [Line Items]
Proceeds from long term line of credit			$ 40,000,000.0
Repayment of long term line of credit			$ 40,000,000.0
2018 Revolving Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Repayment of term loan		$ 521,600,000
2018 Amended and Restated Revolving Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity		$ 150,000,000.0

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- Definition

Revolving credit facility month of maturity.

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Term loan month of maturity.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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Amount of cash outflow for the payment of debt classified as other, maturing after one year or the operating cycle, if longer.

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