Investments (Limited Partnership Investments) - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Schedule Of Investments [Line Items]
Net income from limited partnership interests			$ (85)	$ (542)
Distributions received from limited partnership interests			626	421
Limited Partnership [Member]
Schedule Of Investments [Line Items]
Net income from limited partnership interests	$ 110	$ 11		(542)
Cash distributions	2,756	1,112	2,918	3,017
Distributions received from limited partnership interests	626	$ 118	626	$ 421
Company's net cumulative contributed capital to the partnership	22,160		22,160		$ 23,346
Maximum exposure loss relating to VIE	$ 21,856		$ 21,856		$ 23,583