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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

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