Borrowings - Schedule of Borrowings (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023
Debt Disclosure [Abstract]
Securities sold under agreements with customers to repurchase	$ 138,950	$ 381,928	$ 559,478
Federal funds purchased	2,650	1,100	7,125
Other borrowings	21,053	21,053	21,053
Total	$ 162,653	$ 404,081	$ 587,656