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Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
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