| 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 | 285.4 | 242.3 | 233.7 | 223.8 | 186.1 | 146.8 | 141.1 | 131.8 |
| Interest income on investments | 64.6 | 32.9 | 31.2 | 43.8 | 38.3 | 31.9 | 29.3 | 26.8 |
| Interest income on repurchase agreements | 4.4 | 0.9 | 1.2 | 3.6 | 2.1 | 1.3 | 1.2 | 0.6 |
| | 355.5 | 277.0 | 267.2 | 272.4 | 228.2 | 181.4 | 173.7 | 161.4 |
| Interest on deposits | 4.7 | 3.3 | 6.9 | 11.7 | 7.0 | 4.0 | 3.5 | 3.4 |
| Total interest expense | 9.5 | 5.5 | 9.5 | 15.4 | 12.9 | 6.8 | 5.7 | 5.4 |
| Net interest income | 346.0 | 271.5 | 257.7 | 257.1 | 215.3 | 174.6 | 168.0 | 156.0 |
| Net interest income after provision for loan losses | 346.0 | 271.5 | 257.7 | 257.1 | 215.3 | 174.6 | 168.0 | 156.0 |
| Deposit and loan fees | | | | | | | | 14.3 |
| Credit and debit card fees | | | | | | | | 13.4 |
| Other non-interest income | 63.0 | 63.7 | 55.2 | 53.5 | 49.1 | 49.5 | 44.6 | 17.7 |
| Total non-interest income | 63.0 | 63.7 | 55.2 | 53.5 | 49.1 | 49.5 | 44.6 | 45.3 |
| Non-interest expenses | 216.6 | 178.3 | 182.8 | 185.5 | 168.5 | 146.5 | 146.0 | 130.8 |
| Pre-tax income before non-recurring items | 173.9 | 163.7 | 87.4 | 126.9 | 93.6 | 77.5 | 72.5 | 72.7 |
| Non-recurring items | | | 0.0 | 0.1 | 0.2 | | | |
| Pre-tax income | 173.9 | 163.7 | 87.4 | 126.8 | 93.4 | 77.5 | 72.5 | 72.7 |
| Income taxes | 48.5 | 46.0 | 22.5 | 34.8 | 25.0 | 37.0 | 27.7 | 28.9 |
| Tax rate | 27.9% | 28.1% | 25.8% | 27.4% | 26.8% | 47.7% | 38.2% | 39.7% |
| Net income | 125.4 | 117.7 | 64.8 | 92.1 | 68.3 | 40.6 | 44.8 | 43.8 |
| Net margin | 252.0% | 267.7% | 170.6% | 227.8% | 177.6% | 108.4% | 134.9% | 18.8% |
| |
| Basic EPS | $3.85 | $3.96 | $2.17 | $3.02 | $2.57 | $1.77 | $1.96 | $1.93 |
| Diluted EPS | $3.83 | $3.94 | $2.16 | $3.00 | $2.54 | $1.74 | $1.94 | $1.91 |
| |
| Shares outstanding (basic) | 32.6 | 29.7 | 29.9 | 30.5 | 26.6 | 22.9 | 22.8 | 22.8 |
| Shares outstanding (diluted) | 32.7 | 29.9 | 30.0 | 30.6 | 26.9 | 23.3 | 23.1 | 23.0 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |