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Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Debt Instrument [Line Items] |  |
Total long-term debt | $ 471,164 | $ 315,419
Less current portion | (24,267) | (25,057)
Unamortized deferred issuance costs | (1,636) | (1,898)
Long-term debt, net of current portion | 445,261 | 288,464
Revolving Credit Facility, Due Feb. 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 213,478 | 36,813
2.40% Term Loan, Due Jun. 2022 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 1,698 | 2,629
Term Loan, Due Feb. 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 235,303 | 249,715
2.05% Term Loan, Due Mar. 2023 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 11,100 | 14,737
1.30% Term Loan, Due Jun. 2023 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 3,396 | 4,382
1.55% Term Loan, Due Sep. 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ 6,189 | $ 7,143

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