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Fair Value Measurement - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Fair Value Measurement [Line Items]    
Carrying value of debt $ 350,682 $ 342,465
Restricted investments 20,800 18,100
Fixed-rate Borrowings [Member]    
Fair Value Measurement [Line Items]    
Increase (decrease) in fair value of debt 1,400  
Carrying value of debt $ 350,700 $ 342,500