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v3.25.4

Share-Based Payment Arrangements (Narrative) (Details) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 USD ($) Entity $ / shares shares | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation expense recognized | $ | $ 24.4 | $ 22.7 | $ 24.7
Recognized tax benefit related to share-based compensation | $ | 6.7 | 6.3 | $ 5.7
Restricted and Performance Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total unrecognized compensation expense | $ | $ 47.8 |  |
Weighted-average period | 2 years 10 months 24 days |  |
Total fair value of shares vested | $ | $ 21.5 | $ 24.0 |
Shares granted | 561,240 |  |
Grant date fair value per share | $ / shares | $ 56.14 |  |
Performance Shares [Member] | Executive Management [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Service period | 3 years |  |
Performance Shares [Member] | Total Shareholder Return [Member] | Executive Management [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares granted | 445,989 |  |
Vesting performance period | 3 years |  |
Number of peer group regional banks | Entity | 49 |  |
Performance Shares [Member] | Total Shareholder Return [Member] | Executive Management [Member] | Tranche One [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Percentage of maximum number of shares vested | 200.00% |  |
Performance Shares [Member] | Adjusted Earnings Per Share [Member] | Executive Management [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares granted | 66.84 |  |
Performance Shares [Member] | Average Earnings Per Share [Member] | Executive Management [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares granted | 26,198 |  |
Performance Shares [Member] | Average tangible common equity Earnings Per Share [Member] | Executive Management [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares granted | 26,198 |  |
Grant date fair value per share | $ / shares | $ 52.02 |  |
Restricted Stock Units (RSUs) [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Shares granted | 26,989 |  |
2020 Long Term Incentive Plan [Member] | Options [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Aggregate awards authorized for grant | 5,200,000 |  |
Maximum number of shares which may be granted to participant | 250,000 |  |
Shares available for future issuance | 2,200,000 |  |
2020 Long Term Incentive Plan [Member] | Options [Member] | Maximum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Aggregate awards authorized for grant | 1,000,000 |  |

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