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Long-Term Debt (Future Maturities of Long-Term Debt) (Detail) - Term Loan Due 2026
$ in Thousands
Dec. 31, 2020
USD ($)
Line of Credit Facility [Line Items]  
2021 $ 5,250
2022 5,250
2023 5,250
2024 5,250
2025 65,250
Thereafter 895,997
Total $ 982,247