Fair Value Disclosures - Contingent Consideration Liability Change in Amount (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	$ 1,224	$ 1,765
Payment of contingent consideration	635	635
Adjustment of contingent consideration	46	94
Ending balance	635	1,224
Paul I. Sheaffer Insurance Agency [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	1,224	1,765
Payment of contingent consideration	635	635
Adjustment of contingent consideration	46	94
Ending balance	$ 635	$ 1,224