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Summary of Long Term Debt (Detail) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-term debt	$ 827,400	$ 836,405
Less deferred financing costs and discounts	(5,204)	(5,468)
Total	822,196	830,937
3.95% Senior Notes
Debt Instrument [Line Items]
Long-term debt	482,505	488,505
5.15% Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 344,895	$ 347,900

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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