v3.26.1
Fair Value Measurement - Summary of Assets and Liabilities Measured at Fair Value on Nonrecurring Basis (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
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value $ 1,706,716   $ 1,706,716   $ 1,743,958
Collateral dependent loans 1,703 $ (2,488) 16 $ (7,501)  
Collateral dependent loans          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 13,263   13,263   7,545
Level 1          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 2,665   2,665   2,692
Level 2          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 1,697,549   1,697,549   1,734,626
Level 3          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 6,502   6,502   6,640
Fair value nonrecurring basis          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 14,241   14,241   11,107
Fair value nonrecurring basis | Collateral dependent loans          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 13,263   13,263   7,545
Collateral dependent loans 1,891 (2,485) 204 (7,498)  
Fair value nonrecurring basis | Foreclosed assets          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 978   978   3,562
Collateral dependent loans (188) $ (3) (188) $ (3)  
Fair value nonrecurring basis | Level 1          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 0   0   0
Fair value nonrecurring basis | Level 1 | Collateral dependent loans          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 0   0   0
Fair value nonrecurring basis | Level 1 | Foreclosed assets          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 0   0   0
Fair value nonrecurring basis | Level 2          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 0   0   0
Fair value nonrecurring basis | Level 2 | Collateral dependent loans          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 0   0   0
Fair value nonrecurring basis | Level 2 | Foreclosed assets          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 0   0   0
Fair value nonrecurring basis | Level 3          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 14,241   14,241   11,107
Fair value nonrecurring basis | Level 3 | Collateral dependent loans          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value 13,263   13,263   7,545
Fair value nonrecurring basis | Level 3 | Foreclosed assets          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Total assets measured at fair value $ 978   $ 978   $ 3,562