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Fair Value Measurement - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024
Fair Value Measurement [Line Items]
Carrying value of debt	$ 350,682	$ 264,362
Restricted cash		28,700
Restricted investments	20,800	21,600
Fixed-rate Borrowings [Member]
Fair Value Measurement [Line Items]
Increase (decrease) in fair value of debt	1,400
Carrying value of debt	$ 350,700	$ 264,400

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Fair value measurement.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The aggregate value of all restricted investments.

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