| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Interest income: |
| Interest income on loans | 359.0 | 337.7 | 368.9 | 400.9 | 368.6 | 308.5 | 274.5 | 242.3 |
| Interest income on investments | 51.5 | 23.2 | 18.4 | 21.0 | 17.9 | 12.2 | 9.6 | 10.1 |
| Interest income on repurchase agreements | 0.9 | 0.0 | 0.1 | 0.2 | 0.2 | 0.1 | 0.0 | 0.0 |
| | 424.6 | 364.5 | 390.0 | 429.6 | 393.3 | 324.0 | 285.8 | 253.2 |
| Interest expense: |
| Interest on deposits | 83.3 | 27.8 | 53.6 | 91.0 | 60.2 | 27.3 | 19.2 | 14.3 |
| | 91.7 | 40.0 | 68.4 | 105.6 | 76.3 | 40.1 | 27.6 | 19.2 |
| Net interest income | 332.9 | 324.5 | 321.6 | 324.0 | 317.0 | 283.9 | 258.2 | 233.9 |
| Provision for loan losses | 0.3 | -20.8 | 45.6 | 13.1 | 8.7 | 9.0 | 11.3 | 14.6 |
| Net interest income after provision for loan losses | 332.6 | 345.3 | 276.0 | 311.0 | 308.3 | 274.9 | 246.8 | 219.3 |
| Deposit and loan fees | | | | | | | | 5.4 |
| Other non-interest income | 23.7 | 40.4 | 45.7 | 25.7 | 22.6 | 29.4 | 27.3 | 21.2 |
| Total non-interest income | 23.7 | 40.4 | 45.7 | 25.7 | 22.6 | 29.4 | 27.3 | 26.6 |
| Non-interest expenses | 165.1 | 149.2 | 144.2 | 139.9 | 126.7 | 118.6 | 115.0 | 110.7 |
| Pre-tax income before non-recurring items | 193.4 | 251.7 | 198.2 | 205.3 | 210.2 | 186.3 | 160.3 | 137.6 |
| Non-recurring items | 3.7 | 14.0 | 22.1 | 8.5 | 6.0 | 0.5 | 1.2 | 2.4 |
| Pre-tax income | 189.7 | 237.7 | 176.1 | 196.8 | 204.2 | 185.7 | 159.1 | 135.2 |
| Income taxes | 48.8 | 61.0 | 43.9 | 53.8 | 51.9 | 85.5 | 61.4 | 51.0 |
| Tax rate | 25.7% | 25.7% | 24.9% | 27.4% | 25.4% | 46.0% | 38.6% | 37.8% |
| Net income | 140.9 | 176.7 | 132.2 | 142.9 | 152.3 | 100.2 | 97.7 | 83.6 |
| Net margin | 39.6% | 45.8% | 41.1% | 42.5% | 46.0% | 32.9% | 35.6% | 34.0% |
| |
| Basic EPS | $4.40 | $5.53 | $4.09 | $4.18 | $4.44 | $2.94 | $2.91 | $2.54 |
| Diluted EPS | $4.39 | $5.52 | $4.09 | $4.18 | $4.42 | $2.92 | $2.86 | $2.50 |
| |
| Shares outstanding (basic) | 32.0 | 31.9 | 32.3 | 34.2 | 34.3 | 34.1 | 33.6 | 32.8 |
| Shares outstanding (diluted) | 32.1 | 32.0 | 32.4 | 34.2 | 34.4 | 34.3 | 34.2 | 33.5 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |