v3.26.1
Financial Instruments with Off-Balance Sheet Credit Exposures - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Off-Balance-Sheet, Credit Loss, Liability [Abstract]          
Allowance for credit losses on OBS credit exposures $ 245   $ 245   $ 259
Provision (release) for credit losses for off-balance sheet $ (6) $ 47 $ (14) $ 17