Fair Value Disclosures - Contingent Consideration Liability Change in Amount (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	$ 1,629	$ 55
Contingent consideration from new acquisition	0	1,618
Payment of contingent consideration	0	58
Adjustment of contingent consideration	136	14
Ending balance	1,765	1,629
Girard Partners [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	0	55
Contingent consideration from new acquisition		0
Payment of contingent consideration		58
Adjustment of contingent consideration		3
Ending balance		0
Paul I. Sheaffer Insurance Agency [Member]
Change in Contingent Consideration Liability [Roll Forward]
Beginning balance	1,629	0
Contingent consideration from new acquisition	0	1,618
Payment of contingent consideration	0	0
Adjustment of contingent consideration	136	11
Ending balance	$ 1,765	$ 1,629