Short-Term and Other Borrowings - Summary of Securities Pledged as Collateral Under Repurchase Agreements (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Offsetting Liabilities [Line Items]
Total securities pledged	$ 0	$ 25,143
Gross amount of recognized liabilities for repurchase agreements	0	25,143
Amounts related to agreements not included in offsetting disclosures above	0	0
U.S.Treasury Securities [Member]
Offsetting Liabilities [Line Items]
Total securities pledged	$ 0	$ 25,143