Stockholders' Equity - Components of Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	$ (55,181)	$ (57,920)
Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized or unamortized gains (losses)	(72,724)	(76,709)
Tax effect	17,543	18,789
Total	(55,181)	(57,920)
Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	1,575	633
Cash Flow Hedges [Member] | Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized or unamortized gains (losses)	2,073	839
Tax effect	(498)	(206)
Available for Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total	(56,756)	(58,553)
Available for Sale Securities [Member] | Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Net unrealized or unamortized gains (losses)	(74,797)	(77,548)
Tax effect	$ 18,041	$ 18,995