Goodwill and Other Intangible Assets - Summary of Core Deposit Intangibles (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Core Deposit Intangibles [Roll Forward]
Core deposit intangibles, beginning balance	$ 36,265
Fully amortized portion	(8,074)	$ (1,460)
Acquisition of VRB	10,635	0
Core deposit intangibles, ending balance	38,826	36,265
Accumulated Amortization, Core Deposit Intangibles [Roll Forward]
Accumulated amortization, gross	(23,896)	(19,891)
Fully amortized portion	8,074	1,460
Amortization expense	(6,334)	(5,465)
Accumulated amortization, gross ending balance	(22,156)	(23,896)
Core deposit intangibles
Core Deposit Intangibles [Roll Forward]
Core deposit intangibles, beginning balance	36,265	37,725
Core deposit intangibles, ending balance		36,265
Accumulated Amortization, Core Deposit Intangibles [Roll Forward]
Core deposit intangibles, net, ending balance	$ 16,670	$ 12,369