| 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 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | S-1/A |
| Interest and Dividend Income | | | | | | | |
| Interest and fees on loans | 44.4 | 41.4 | 42.2 | 38.3 | 31.3 | 25.4 | |
| Interest and dividends on securities | 3.8 | 2.2 | 2.1 | 2.7 | 2.4 | 2.5 | |
| Other income | 0.3 | 0.1 | 0.0 | 0.1 | 0.1 | 0.1 | |
| Total interest and dividend income | 48.6 | 43.7 | 44.4 | 41.0 | 33.7 | 27.9 | 25.6 |
| |
| Interest Expense | | | | | | | |
| Interest expense on deposits | 5.6 | 3.6 | 6.7 | 7.0 | 4.2 | 3.1 | |
| Interest expense on borrowings | 1.1 | 0.7 | 1.3 | 1.8 | 1.1 | 0.2 | |
| Total interest expense | 6.8 | 4.3 | 8.0 | 8.7 | 5.3 | 3.3 | |
| Net interest income | 41.8 | 39.4 | 36.4 | 32.2 | 28.4 | 24.6 | 22.5 |
| Provision for (reversal of) credit losses | 1.4 | -3.7 | 7.1 | 2.5 | 2.1 | 0.9 | 1.2 |
| Provision for (reversal of) credit losses | 1.4 | -3.7 | 7.1 | 2.5 | 2.1 | 0.9 | 1.2 |
| Net interest income after provision for (reversal of) credit losses | 40.4 | 43.1 | 29.2 | 29.8 | 26.3 | 23.7 | 21.3 |
| |
| Non-interest Income | | | | | | | |
| Service charges on deposit accounts | 46.3 | 50.5 | 37.5 | 35.4 | 31.5 | 31.7 | 28.4 |
| Service charges on deposit accounts growth | -8.3% | 34.5% | 6.0% | 12.5% | -0.8% | 12.0% | |
| Net gain on sales of loans | 0.9 | 2.6 | 3.8 | 1.2 | 0.6 | 0.6 | |
| Increase in cash surrender value of life insurance | 0.6 | 0.6 | 0.4 | 0.4 | 0.4 | 0.5 | |
| Gain on disposal of premises and equipment | 0.0 | 0.0 | 0.0 | | 0.0 | -0.1 | |
| Investment advisory income | 1.2 | 1.1 | 1.3 | 0.9 | 0.8 | 0.7 | |
| Other | 0.5 | 0.3 | 0.1 | 0.3 | 0.9 | 0.9 | 0.1 |
| Total non-interest income | 5.9 | 7.4 | 8.3 | 5.6 | 5.2 | 8.1 | 7.0 |
| |
| Non-interest Expense | | | | | | | |
| Salaries and employee benefits | 21.6 | 20.1 | 16.8 | 15.6 | 14.4 | 13.5 | |
| Occupancy | 4.6 | 4.1 | 3.5 | 3.5 | 3.4 | 3.4 | |
| Data processing | 1.9 | 1.7 | 1.4 | 1.3 | 1.2 | 1.2 | |
| Professional fees | 1.7 | 1.8 | 1.6 | 1.4 | 0.9 | 0.8 | |
| Marketing | 0.7 | 0.7 | 0.5 | 0.7 | | | |
| FDIC deposit insurance and other insurance | 0.8 | 0.8 | 0.8 | 0.5 | 0.8 | 0.8 | |
| Amortization of intangible assets | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.1 | |
| Other | 6.0 | 6.1 | 5.2 | 4.8 | 4.4 | 4.4 | |
| Total non-interest expense | 37.4 | 35.5 | 30.1 | 27.9 | 26.1 | 25.1 | 24.3 |
| Income before income taxes | 8.9 | 15.0 | 7.5 | 7.5 | 5.4 | 6.6 | |
| Provision for income taxes | 1.9 | 3.4 | 1.6 | 1.5 | 1.0 | 3.6 | 1.3 |
| Net income | 7.0 | 11.6 | 5.9 | 6.0 | 4.4 | 3.0 | 2.7 |
| |
| Earnings per common share: | | | | | | | |
| Basic | $0.65 | $1.07 | $0.55 | $0.56 | | | |
| Diluted | $0.64 | $1.06 | $0.55 | $0.56 | | | |
| |
| Weighted average shares outstanding, basic | 10.8 | 10.8 | 10.7 | 10.7 | | | |
| Weighted average shares outstanding, diluted | 11.0 | 11.0 | 10.7 | 10.7 | | | |