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Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
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Debt Instrument [Line Items] |  |
Total long-term debt | $ 349,662 | $ 362,255
Less current portion | (22,866) | (22,940)
Unamortized deferred issuance costs | (2,103) | (2,396)
Long-term debt, net of current portion | 324,693 | 336,919
Revolving Credit Facility, Due Feb. 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 83,985 | 84,255
2.40% Term Loan, Due Jun. 2022 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 3,200 | 4,012
Term Loan, Due Feb. 2024 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 234,038 | 240,969
2.05% Term Loan, Due Mar. 2023 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 16,437 | 19,487
1.30% Term Loan, Due Jun. 2023 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | 4,799 | 5,617
1.55% Term Loan, Due Sep. 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Total long-term debt | $ 7,203 | $ 7,915

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