Derivatives and Hedging Activities - Summary of Derivative Financial Instruments Not Designated as Hedging Instruments on Consolidated Statements of Income (Loss) (Detail) - Derivatives Not Designated as Hedging Instruments [Member] - Customer Loan Swaps [Member] - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of (Loss) Gain Recognized in Income (Loss)	$ (12)	$ 83
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest and Fee Income, Loans and Leases	Interest and Fee Income, Loans and Leases