| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 8-K | 10-Q | 10-Q | 10-Q | 8-K | 10-Q |
| CASH FLOWS FROM OPERATING ACTIVITIES: | | | | | | | | |
| Adjustments to reconcile net income to net cash from operating activities: | | | | | | | | |
| Net accretion of acquisition accounting estimates | -0.2 | -0.6 | | -0.4 | -0.3 | -0.5 | | 0.0 |
| Provision for credit losses | 0.7 | 1.2 | | 0.7 | 0.2 | 0.6 | | 0.3 |
| Depreciation and amortization | 1.4 | 1.4 | | 1.4 | 1.3 | 1.6 | | 0.7 |
| Net amortization of securities | 0.4 | 0.2 | | 0.3 | 0.3 | 0.5 | | 0.3 |
| (Gain) on mortgage banking activities | -0.8 | -0.7 | | -0.6 | -0.2 | -1.7 | | |
| Stock-based compensation expense | 0.2 | 0.2 | | 0.2 | 0.2 | 0.1 | | 0.1 |
| Deferred income tax (benefit) expense | -0.6 | -0.1 | | -0.8 | 0.1 | 0.0 | | -0.3 |
| Loss (Gain) on valuation adjustments on mortgage servicing rights | 0.0 | | | | -0.5 | | | |
| Gain (loss) on sales and valuation adjustments on other real estate owned | | 0.0 | | | 0.1 | 0.0 | | |
| Fair value adjustment on equity securities | 0.0 | 0.0 | | 0.1 | 0.0 | 0.1 | | 0.0 |
| Net changes in: | | | | | | | | |
| Accrued interest receivable | -0.6 | 1.3 | | -0.4 | 0.2 | -0.5 | | 0.4 |
| Other assets | -1.1 | -1.4 | | -0.6 | 1.3 | -1.0 | | -0.2 |
| Accrued interest payable | 1.4 | 0.3 | | -0.2 | 0.3 | -0.3 | | -0.4 |
| Other liabilities | -2.5 | 2.1 | | -0.8 | 0.7 | -3.9 | | -0.2 |
| Net cash provided by operating activities | -0.6 | 11.2 | | 7.0 | 17.9 | 25.2 | | 5.0 |
| |
| CASH FLOWS FROM INVESTING ACTIVITIES: | | | | | | | | |
| Proceeds from maturities and principal payments of investment securities available for sale | 14.6 | 13.2 | | 20.9 | 18.1 | 18.3 | | 8.1 |
| Purchases of securities held to maturity | | | | -129.0 | -64.4 | -14.1 | | -77.8 |
| Purchases of equity securities | 0.0 | 0.0 | | 0.0 | 0.0 | 0.0 | | 0.0 |
| Purchase of restricted securities | -12.6 | -11.4 | | | | -5.7 | | |
| Net change in loans | -84.5 | -111.7 | | -136.9 | -82.7 | -61.2 | | -22.3 |
| Purchases of premises and equipment | -1.1 | -0.6 | | -0.6 | -0.7 | -1.0 | | -2.1 |
| Proceeds from sales of other real estate owned | 0.7 | 0.0 | | | 0.3 | 0.1 | | |
| Purchases of bank owned life insurance | 0.0 | -0.1 | | 0.0 | 0.0 | -10.1 | | 0.0 |
| Proceeds from disposal of premises held for sale | 0.7 | 0.0 | | | 0.3 | 0.1 | | |
| Net cash (used in) investing activities | -76.5 | -103.1 | | -245.6 | -129.5 | -73.7 | | -68.0 |
| |
| CASH FLOWS FROM FINANCING ACTIVITIES: | | | | | | | | |
| Noninterest-bearing deposits | -29.7 | -53.3 | | 4.7 | 12.7 | -51.1 | | 16.9 |
| Interest-bearing deposits | -27.3 | 38.2 | | -3.5 | -66.7 | 93.4 | | 120.6 |
| Short-term borrowings | 144.5 | 91.5 | | | | -4.1 | | 0.6 |
| Common stock dividends paid | -2.4 | -2.4 | | -2.4 | -2.4 | -2.4 | | -1.4 |
| Net cash provided by (used in) financing activities | 85.2 | 74.1 | | -1.1 | -56.3 | 35.9 | | 136.7 |
| |
| Supplemental cash flows information: | | | | | | | | |
| Interest paid | 9.1 | 12.7 | | 3.6 | 1.8 | 2.3 | | 1.6 |
| Income taxes paid | 6.2 | 0.2 | | 4.8 | 2.3 | | | 2.6 |
| Recognition (remeasurement of) lease liabilities arising from right-of-use assets | | 0.0 | | -0.6 | 0.1 | -0.7 | | 1.2 |
| Transfers from loans to other real estate owned | | | | | | 0.1 | | |