Goodwill and Other Amortizing Intangible Assets - Summarized Other Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 24,856	$ 24,856
Accumulated Amortization	(18,671)	(16,169)
Net Intangible Assets	6,185	8,687
Customer deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	22,573	22,573
Accumulated Amortization	(16,750)	(14,407)
Net Intangible Assets	5,823	8,166
Customer list intangible
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	2,283	2,283
Accumulated Amortization	(1,921)	(1,762)
Net Intangible Assets	$ 362	$ 521