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Fair Value Measurement - Additional Information (Detail) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Fair Value Measurement [Line Items] |  |
Carrying value of debt | $ 254,999 | $ 264,362
Restricted cash | 26,800 | 28,700
Restricted investments | 20,700 | 21,600
Fixed-rate Borrowings [Member] |  |
Fair Value Measurement [Line Items] |  |
Increase (decrease) in fair value of debt | 2,200 |
Carrying value of debt | $ 255,000 | $ 264,400

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