| 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 | 195.2 | 147.8 | 155.8 | 165.7 | 148.6 | 131.0 | 112.0 | 94.3 |
| Interest income on investments | 13.9 | 11.7 | 9.0 | 10.6 | 9.3 | 6.7 | 4.5 | 4.6 |
| | 211.9 | 160.1 | 165.8 | 180.7 | 159.7 | 138.7 | 117.0 | 99.1 |
| Interest expense: |
| Interest on borrowings | | | | | | 0.2 | 0.3 | 0.1 |
| | 5.5 | 7.0 | 5.0 | 60.4 | 44.5 | 27.6 | 20.6 | 14.7 |
| Net interest income | 217.3 | 167.1 | 170.7 | 120.3 | 115.2 | 111.1 | 96.4 | 84.5 |
| Provision for loan losses | 6.4 | 6.5 | 32.4 | 4.0 | 3.6 | 5.9 | 7.5 | 7.1 |
| Net interest income after provision for loan losses | 211.0 | 160.6 | 138.3 | 116.3 | 111.6 | 105.3 | 88.9 | 77.4 |
| Deposit and loan fees | | | | 3.5 | 3.5 | 3.2 | 3.3 | 3.3 |
| Gain on sale of investments, net | | | | 0.1 | -0.4 | | 0.1 | 0.5 |
| Other non-interest income | 66.4 | 72.2 | 61.8 | 51.1 | 41.1 | 31.4 | 25.5 | 19.9 |
| Total non-interest income | 66.4 | 72.2 | 61.8 | 54.7 | 44.2 | 34.6 | 28.9 | 23.7 |
| Non-interest expenses | 133.8 | 126.2 | 125.0 | 104.8 | 98.1 | 85.6 | 75.1 | 68.9 |
| Pre-tax income before non-recurring items | 102.3 | 77.7 | 32.0 | 64.0 | 56.1 | 52.7 | 42.1 | 32.1 |
| Non-recurring items | | | | -2.1 | -1.6 | -1.6 | -0.6 | |
| Pre-tax income | 102.3 | 77.7 | 32.0 | 66.1 | 57.7 | 54.3 | 42.7 | 32.1 |
| Income taxes | 28.1 | 21.0 | 5.8 | 18.7 | 13.6 | 17.8 | 16.3 | 12.2 |
| Tax rate | 27.5% | 27.1% | 18.2% | 28.3% | 23.5% | 32.8% | 38.1% | 37.9% |
| Net income | 74.2 | 56.6 | 26.2 | 47.4 | 44.2 | 36.5 | 26.5 | 20.0 |
| Net margin | 26.8% | 24.3% | 13.1% | 27.7% | 28.3% | 26.1% | 22.5% | 19.8% |
| |
| Basic EPS | $4.09 | $3.01 | $1.39 | $2.46 | $2.33 | $2.07 | $1.62 | $1.32 |
| Diluted EPS | $4.00 | $2.93 | $1.37 | $2.44 | $2.31 | $2.03 | $1.60 | $1.29 |
| |
| Shares outstanding (basic) | 18.2 | 18.8 | 18.9 | 19.3 | 19.0 | 17.7 | 16.3 | 15.2 |
| Shares outstanding (diluted) | 18.6 | 19.3 | 19.1 | 19.4 | 19.1 | 17.9 | 16.5 | 15.4 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |