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Share-Based Compensation Plans - Narrative (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum exercisable period for stock options (years) | 10 years |  |  |
Maximum number of shares that may be issued under 2010 plan (shares) | 750,000 |  |  |
Aggregate number of shares of common stock available for grant (shares) | 841,513 |  |  |
Employee stock purchase plan expense | $ 13,200 | $ 11,200 | $ 11,000 |
Nonvested awards, compensation cost not yet recognized | $ 22,500 |  |  |
Number of shares granted (shares) | 19,164 |  |  |
Cash received from exercise of options | $ 800 |  |  |
Tax benefit from exercise of options | $ 100 |  |  |
Restricted stock units, granted as long term incentive compensation (percent) | 40.00% |  |  |
Restricted stock units, vesting upon meeting certain thresholds (percent) | 60.00% |  |  |
Director |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock issued for services (shares) | 26,791 |  |  |
Stock issued for services, value | $ 1,300 |  |  |
Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Granted (shares) | 22,300 |  |  | 300,000
Award vesting period (years) | 3 years |  |  |
Number of restricted stock units granted (shares) | 364,899 |  |  |
Stock Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options expiration date (years) | 10 years |  |  |
Number of shares granted (shares) | 19,164 | 0 | 0 |
Stock Options | Minimum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting period (years) | 3 years |  |  |
Stock Options | Maximum |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting period (years) | 5 years |  |  |
2010 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Fully diluted tangible book value | 50.00% |  |  |
Maximum number of shares that may be issued under 2010 plan (shares) | 3,666,667 |  |  |
2019 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum number of shares that may be issued under 2010 plan (shares) |  | 740,325 | 330,000 |
Maximum number of shares that may be issued under plan (shares) | 3,320,325 |  |  |
2004 Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum number of shares that may be issued under plan (shares) | 2,750,000 |  |  |
ESPP |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Employee stock purchase plan expense | $ 170 | $ 172 | $ 192 |
Purchase price under employee stock purchase plan (percent) | 85.00% |  |  |
Purchase price under employee stock purchase plan, discount (percent) | 15.00% |  |  |
2004 and 2019 Plan | Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of restricted stock units granted (shares) | 364,899 |  |  |
2004 and 2019 Plan | Restricted Stock Units | Waterfall |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting period (years) | 3 years |  |  |
2004 and 2019 Plan | Restricted Stock Units | Cliff |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting period (years) | 3 years |  |  |
Number of restricted stock units granted (shares) | 39,555 |  |  |

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