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Fair Values of Financial Instruments - Schedule of Additional Information about Financial Assets and Liabilities Measured at Fair Value Utilized Level 3 (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Loans Held For Sale [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balance, beginning of period $ 44,360 $ 51,978
Originations 370,856 607,383
Sales (393,506) (630,244)
Transfers other 0 0
Total gains during the period recognized in earnings 9,567 15,243
Balance, end of period 31,277 44,360
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date 48 (1,133)
Derivative Financial Assets Tba Securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balance, beginning of period 278 0
Originations 0 0
Sales 0 0
Transfers other (278) 278
Total gains during the period recognized in earnings 0 0
Balance, end of period 0 278
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date 0 278
Derivative Financial Assets Forward Sales Commitments [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balance, beginning of period 0 33
Originations 0 0
Sales 0 0
Transfers other 15 (33)
Total gains during the period recognized in earnings 0 0
Balance, end of period 15 0
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date 15 0
Interest Rate Lock Commitments [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balance, beginning of period 339 1,005
Originations 0 0
Sales 0 0
Transfers other 119 (666)
Total gains during the period recognized in earnings 0 0
Balance, end of period 458 339
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date 458 339
Derivative Financial Liabilities Tba Securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balance, beginning of period 0 667
Originations 0 0
Sales 0 0
Transfers other 70 (667)
Total gains during the period recognized in earnings 0 0
Balance, end of period 70 0
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date 70 0
Derivative Financial Liabilities Forward Sales Commitments [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Balance, beginning of period 20 0
Originations 0 0
Sales 0 0
Transfers other (20) 20
Total gains during the period recognized in earnings 0 0
Balance, end of period 0 20
The amount of total (Losses) gains for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at reporting date $ 0 $ 20