Goodwill and Other Amortizing Intangible Assets - Summarized Other Intangible Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 46,882	$ 41,527
Accumulated Amortization	(30,763)	(26,668)
Net Intangible Assets	16,119	14,859
Customer deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	44,599	39,244
Accumulated Amortization	(28,548)	(24,522)
Net Intangible Assets	16,051	14,722
Customer list intangible
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	2,283	2,283
Accumulated Amortization	(2,215)	(2,146)
Net Intangible Assets	$ 68	$ 137