Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Jul. 01, 2019
Debt Instrument [Line Items]
Total long-term debt	$ 456,214	$ 315,419
Less current portion	(27,441)	(25,057)
Unamortized deferred issuance costs	(5,683)	(1,898)
Long-term debt, net of current portion	423,090	288,464
Interest rate on debt			1.25%
Term loan, due Feb. 2024
Debt Instrument [Line Items]
Total long-term debt	226,080	249,715
2.40% Term Loan
Debt Instrument [Line Items]
Total long-term debt	$ 1,241	$ 2,629
Interest rate on debt	2.40%	2.40%
2.05% Term Loan
Debt Instrument [Line Items]
Total long-term debt	$ 9,270	$ 14,737
Interest rate on debt	2.05%	2.05%
1.30% Term Loan
Debt Instrument [Line Items]
Total long-term debt	$ 2,895	$ 4,382
Interest rate on debt	1.30%	1.30%
1.55% Term Loan
Debt Instrument [Line Items]
Total long-term debt	$ 5,674	$ 7,143
Interest rate on debt	1.55%	1.55%
1.10% Term Loan
Debt Instrument [Line Items]
Total long-term debt	$ 10,527	$ 0
Interest rate on debt	1.10%	1.10%
Revolving credit facility, due Feb. 2024
Debt Instrument [Line Items]
Total long-term debt	$ 200,527	$ 36,813

Contractual interest rate for funds borrowed, under the debt agreement.

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