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Summary of Long Term Debt (Detail) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Debt Instrument [Line Items] |  |  |
Long-term debt |  | $ 908,755 | $ 908,755
Less deferred financing costs and discounts |  | (6,859) | (7,271)
Total |  | 901,896 | 901,484
Term Loan Agreement |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt | [1] | 50,000 | 50,000
3.95% Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt |  | 509,505 | 509,505
5.15% Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Long-term debt |  | $ 349,250 | $ 349,250
[1] | The borrowings outstanding under the Term Loan Agreement maturing in June 2022 are classified as long-term because we have the ability and intent to repay these obligations utilizing our revolving credit facility. Our revolving credit facility matures in two increments in 2024 and 2025.

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