Fair Value Measurement - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Fair Value Measurement [Line Items]
Carrying value of debt	$ 336,563	$ 342,465
Restricted investments	20,300	18,100
Fixed-rate Borrowings [Member]
Fair Value Measurement [Line Items]
Increase (decrease) in fair value of debt	9,000	11,700
Carrying value of debt	$ 336,600	$ 342,500