| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Interest income: |
| Interest income on loans | 57.6 | 59.4 | 58.2 | 59.0 | 61.7 | 69.1 | 78.4 | 89.1 |
| Interest income on investments | 114.8 | 105.3 | 93.5 | 84.8 | 72.1 | 64.9 | 58.1 | 51.2 |
| | 173.4 | 165.9 | 158.7 | 151.7 | 138.3 | 135.9 | 136.5 | 140.2 |
| Interest expense: |
| Interest on deposits | 1.9 | 1.8 | 1.9 | 1.9 | 1.9 | 2.1 | 2.4 | 2.9 |
| Interest on borrowings | | | | | | | 0.0 | 0.4 |
| | 2.0 | 1.8 | 1.9 | 2.0 | 1.9 | 2.1 | 2.4 | 3.4 |
| Net interest income | 171.5 | 164.0 | 156.8 | 149.8 | 136.4 | 133.8 | 134.1 | 136.8 |
| Provision for loan losses | | 4.3 | | | | | | 2.8 |
| Net interest income after provision for loan losses | 171.5 | 159.7 | 156.8 | 149.8 | 136.4 | 133.8 | 134.1 | 134.0 |
| Deposit and loan fees | | | | | | | 22.2 | 24.2 |
| Gain on sale of investments, net | 0.0 | 0.1 | 0.2 | | | | | |
| Other non-interest income | 43.3 | 45.6 | 47.2 | 48.1 | 56.6 | 46.6 | 25.6 | 27.6 |
| Total non-interest income | 43.3 | 45.6 | 47.4 | 48.1 | 56.6 | 46.6 | 47.9 | 51.8 |
| Non-interest expenses | 97.8 | 98.6 | 99.0 | 106.9 | 107.8 | 103.6 | 105.3 | 106.8 |
| Pre-tax income before non-recurring items | 117.0 | 110.3 | 105.2 | 91.0 | 87.2 | 80.0 | 76.7 | 79.0 |
| Non-recurring items | | 3.5 | | | | | | |
| Pre-tax income | 117.0 | 106.8 | 105.2 | 91.0 | 87.2 | 80.0 | 76.7 | 79.0 |
| Income taxes | 30.5 | 26.4 | 24.8 | 19.4 | 37.1 | 21.1 | 17.9 | 18.3 |
| Tax rate | 26.1% | 24.7% | 23.6% | 21.4% | 42.6% | 26.4% | 23.4% | 23.2% |
| Net income | 86.5 | 80.4 | 80.4 | 71.6 | 50.0 | 58.9 | 58.8 | 60.6 |
| Net margin | 40.3% | 39.2% | 39.4% | 36.2% | 25.9% | 32.6% | 32.3% | 32.6% |
| |
| Basic EPS | $3.22 | $2.98 | $2.98 | $2.69 | $1.90 | $2.30 | $2.30 | $2.32 |
| Diluted EPS | $3.22 | $2.98 | $2.98 | $2.67 | $1.89 | $2.29 | $2.30 | $2.32 |
| |
| Shares outstanding (basic) | 26.9 | 26.9 | 27.0 | 26.6 | 26.3 | 25.6 | 25.6 | 26.1 |
| Shares outstanding (diluted) | 26.9 | 27.0 | 27.0 | 26.8 | 26.4 | 25.7 | 25.6 | 26.2 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |