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Fair Value Measurement - Additional Information (Detail) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Fair Value Measurement [Line Items] |  |
Carrying value of debt | $ 319,864 | $ 274,752
Restricted investments | 16,900 | 24,300
Fixed-rate Borrowings [Member] |  |
Fair Value Measurement [Line Items] |  |
Increase (decrease) in fair value of debt | 11,700 |
Carrying value of debt | $ 319,900 | $ 274,800

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