| 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 | 136.7 | 150.5 | 170.0 | 142.1 | 125.8 | 118.1 | 115.1 | 116.7 |
| Interest income on investments | 28.1 | 27.3 | 26.4 | 20.2 | 17.1 | 14.0 | 12.0 | 12.9 |
| | 165.5 | 178.3 | 197.7 | 163.9 | 142.9 | 132.2 | 127.1 | 129.6 |
| Interest expense: |
| Interest on deposits | 9.4 | 22.5 | 32.7 | 21.4 | 14.8 | 12.1 | 10.9 | 11.0 |
| | 9.9 | 23.6 | 36.3 | 25.7 | 16.8 | 13.2 | 11.8 | 12.0 |
| Net interest income | 155.6 | 154.6 | 161.4 | 138.2 | 126.1 | 118.9 | 115.2 | 117.6 |
| Provision for loan losses | | | | | 3.0 | 4.4 | 7.0 | 4.1 |
| Net interest income after provision for loan losses | 155.6 | 154.6 | 161.4 | 138.2 | 123.1 | 114.6 | 108.3 | 113.6 |
| Deposit and loan fees | | | | | | | 26.3 | 26.6 |
| Credit and debit card fees | | | | | | | 15.9 | 15.1 |
| Gain on sale of investments, net | | | | | | | 2.1 | 1.2 |
| Other non-interest income | 69.6 | 82.7 | 68.5 | 60.6 | 63.6 | 58.8 | 22.9 | 15.9 |
| Total non-interest income | 69.6 | 82.7 | 68.5 | 60.6 | 63.6 | 58.8 | 67.2 | 58.7 |
| Non-interest expenses | 117.2 | 115.3 | 117.6 | 113.1 | 96.0 | 96.2 | 93.0 | 95.0 |
| Pre-tax income before non-recurring items | 111.2 | 111.3 | 114.3 | 101.3 | 90.7 | 77.2 | 94.2 | 77.2 |
| Non-recurring items | | | 0.8 | 13.3 | | | 11.7 | |
| Pre-tax income | 111.2 | 111.3 | 113.5 | 88.0 | 90.7 | 77.2 | 82.5 | 77.2 |
| Income taxes | 23.1 | 21.7 | 24.1 | 18.0 | 36.4 | 25.1 | 28.4 | 24.3 |
| Tax rate | 20.8% | 19.5% | 21.3% | 20.5% | 40.2% | 32.5% | 34.4% | 31.4% |
| Net income | 88.1 | 89.6 | 89.4 | 70.0 | 54.3 | 52.1 | 54.1 | 53.0 |
| Net margin | 135.7% | 146.3% | 140.1% | 121.8% | 29.1% | 30.1% | 30.8% | 30.7% |
| |
| Basic EPS | $5.73 | $5.61 | $5.48 | $4.54 | $3.52 | $3.50 | $3.58 | $3.44 |
| Diluted EPS | $5.72 | $5.60 | $5.47 | $4.53 | $3.52 | $3.50 | $3.57 | $3.42 |
| |
| Shares outstanding (basic) | 15.4 | 16.0 | 16.3 | 15.4 | 15.4 | 14.9 | 15.1 | 15.4 |
| Shares outstanding (diluted) | 15.4 | 16.0 | 16.3 | 15.4 | 15.4 | 14.9 | 15.2 | 15.5 |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |