Loans and Allowance for Credit Losses - Schedule of Outstanding Balance of Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Receivables [Abstract]
Net loan balance	$ 3,504,218	$ 3,333,689
Loan origination fees and expenses	(848)	(1,375)
Merger fair value adjustments	(6,300)	(3,650)
Hedge fair market value adjustments	(1,658)	(1,826)
Purchased premium and discounts	5,404	6,063
Total Loans	$ 3,500,816	$ 3,332,901