| In millions, except per share items | Jun-30-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Interest income: | | | | | | | | |
| Interest and fees on loans | 65.4 | 53.6 | 45.1 | 36.6 | 33.9 | 36.9 | 35.7 | 34.8 |
| Interest on mortgage loans held for sale | 0.2 | 0.3 | 0.4 | 0.3 | 0.2 | 0.4 | 0.3 | 0.4 |
| Taxable interest on debt securities | 7.4 | 6.6 | 6.1 | 4.9 | 4.2 | 3.9 | 3.7 | 3.4 |
| Dividends on Federal Home Loan Bank stock | 0.9 | 0.3 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Other interest income | 1.3 | 0.9 | 0.5 | 0.2 | 0.1 | 0.1 | 0.1 | 0.0 |
| Total interest and dividend income | 75.2 | 61.8 | 52.1 | 42.0 | 38.5 | 41.4 | 39.8 | 38.8 |
| |
| Interest expense: | | | | | | | | |
| Deposits | 29.7 | 12.3 | 6.7 | 4.0 | 3.1 | 3.0 | 2.8 | 3.0 |
| Federal Home Loan Bank advances | 11.7 | 7.8 | 3.2 | 0.4 | 0.2 | 0.5 | 0.9 | 1.0 |
| Junior subordinated debentures | 0.4 | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Total interest expense | 41.7 | 20.4 | 10.1 | 4.5 | 3.4 | 3.6 | 3.8 | 4.1 |
| Net interest income | 33.5 | 41.3 | 42.0 | 37.5 | 35.1 | 37.7 | 36.1 | 34.8 |
| Provision for credit losses | 0.7 | 0.8 | 0.8 | -3.0 | 0.1 | -2.8 | | |
| |
| Noninterest income: | | | | | | | | |
| Mortgage banking revenues | 1.8 | 1.1 | 2.0 | 2.1 | 3.5 | 4.3 | 6.4 | 6.0 |
| Card interchange fees | 1.3 | 1.2 | 1.3 | 1.3 | 1.2 | 1.3 | 1.3 | 1.3 |
| Service charges on deposit accounts | 0.7 | 0.9 | 0.8 | 0.8 | 0.7 | 0.8 | 0.7 | 0.6 |
| Loan related derivative income | 0.2 | 0.7 | 1.0 | 0.7 | 0.3 | 2.0 | 0.7 | 1.2 |
| Income from bank-owned life insurance | 0.9 | 0.7 | 0.7 | 0.6 | 0.6 | 1.1 | 0.6 | 0.6 |
| Other income | 0.5 | 0.4 | 0.4 | 0.4 | 0.4 | 0.3 | 0.4 | 0.4 |
| Total noninterest income | 14.3 | 13.8 | 15.8 | 15.9 | 17.2 | 20.3 | 20.5 | 20.6 |
| |
| Noninterest expense: | | | | | | | | |
| Salaries and employee benefits | 20.6 | 20.8 | 21.6 | 20.4 | 21.0 | 21.5 | 22.2 | 22.1 |
| Outsourced services | 3.6 | 3.6 | 3.6 | 3.4 | 3.2 | 3.6 | 3.3 | 3.2 |
| Net occupancy | 2.4 | 2.4 | 2.2 | 2.2 | 2.3 | 2.1 | 2.1 | 2.0 |
| Equipment | 1.1 | 1.0 | 0.9 | 0.9 | 0.9 | 1.0 | 1.0 | 1.0 |
| Legal, audit and professional fees | 1.0 | 1.0 | 0.7 | 0.7 | 0.8 | 0.8 | 0.8 | 0.7 |
| FDIC deposit insurance costs | 1.4 | 0.5 | 0.4 | 0.4 | 0.4 | 0.4 | 0.5 | 0.4 |
| Advertising and promotion | 0.4 | 0.7 | 0.8 | 0.7 | 0.4 | 0.5 | 0.6 | 0.6 |
| Amortization of intangibles | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Other expenses | 2.4 | 3.2 | 2.6 | 2.2 | 2.1 | 2.4 | 1.9 | 2.0 |
| Total noninterest expense | 33.0 | 33.4 | 33.1 | 31.1 | 31.2 | 35.2 | 32.5 | 33.0 |
| Income (loss) before income taxes | 14.1 | 21.0 | 24.0 | 25.3 | 20.9 | 25.7 | 24.1 | 22.3 |
| Income tax expense | 2.9 | 4.4 | 5.3 | 5.3 | 4.4 | 5.5 | 5.3 | 4.9 |
| Net income | 11.3 | 16.6 | 18.7 | 20.0 | 16.5 | 20.2 | 18.8 | 17.5 |
| |
| Weighted average common shares outstanding - basic | 17.0 | 17.2 | 17.2 | 17.3 | 17.3 | 17.3 | 17.3 | 17.3 |
| Weighted average common shares outstanding - diluted | 17.0 | 17.4 | 17.3 | 17.4 | 17.5 | 17.5 | 17.4 | 17.4 |
| |
| Per share information: | | | | | | | | |
| Basic earnings per common share | $0.66 | $0.96 | $1.08 | $1.15 | $0.95 | $1.16 | $1.08 | $1.01 |
| Diluted earnings per common share | $0.66 | $0.95 | $1.08 | $1.14 | $0.94 | $1.15 | $1.07 | $1.00 |