| 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 | Dec-31-15 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Cash flows from operating activities | | | | | | | | |
| Net income | 8.3 | 10.7 | 8.9 | 4.6 | 8.8 | 9.0 | 9.8 | 8.4 |
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| Adjustments to reconcile net income to net cash from operating activities: | | | | | | | | |
| Depreciation and amortization | 1.1 | 1.2 | 1.2 | 1.3 | 1.1 | 0.9 | 0.8 | 0.7 |
| Amortization of intangibles | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | | |
| Amortization of securities | 23.2 | 1.0 | -0.3 | | | | | |
| Decrease in interest receivable | -0.9 | -0.4 | -0.7 | 0.0 | -0.1 | -0.2 | -0.1 | 0.0 |
| Decrease (increase) in deferred taxes | -0.1 | 0.5 | -0.7 | | 0.1 | -0.2 | 0.0 | 0.3 |
| (Decrease) increase in accrued expenses | 2.8 | 42.3 | 20.3 | 1.7 | -0.8 | 1.5 | 1.7 | 1.5 |
| Income from life insurance investment | -0.7 | -0.7 | -0.6 | | | | | |
| Loss on the sale of investment securities | | | | | -0.1 | 0.0 | 0.0 | 0.0 |
| Net cash provided by operating activities | 39.9 | 21.3 | 1.8 | 15.4 | 11.9 | 6.9 | 15.6 | 9.8 |
| |
| Cash flows from investing activities | | | | | | | | |
| Proceeds from the sale of fixed assets | | 0.1 | | | | | | |
| Net purchase of property and equipment | -3.6 | -0.6 | -0.7 | -2.4 | -3.0 | -6.5 | -3.6 | -1.8 |
| Net cash (used in) investing activities | -147.9 | -243.7 | -142.1 | 21.5 | -31.7 | -10.0 | -75.7 | -73.4 |
| |
| Cash flows from financing activities | | | | | | | | |
| Dividends paid in cash | -3.6 | -3.6 | -3.6 | -3.3 | -4.3 | -3.4 | -3.1 | -2.9 |
| Proceeds from issuance of common stock | 0.3 | 0.3 | | 0.3 | 0.3 | 0.2 | 0.2 | 0.1 |
| Repayments of long-term debt | | | | -17.0 | -9.5 | -14.5 | -3.9 | -1.7 |
| Net cash provided by financing activities | 54.8 | 232.1 | 142.9 | 28.0 | 18.8 | -1.3 | 68.0 | 49.0 |
| Cash and cash equivalents, beginning of period | 88.1 | 78.4 | 75.8 | 10.9 | 11.9 | 16.4 | 8.5 | 23.2 |
| Cash and cash equivalents, end of period | 35.0 | 88.1 | 78.4 | 75.8 | 10.9 | 11.9 | 16.4 | 8.5 |
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| Supplemental Cash Flow information: | | | | | | | | |
| Cash paid for: Interest | 7.4 | 4.1 | 5.8 | 6.8 | 4.7 | 3.9 | 3.6 | 2.9 |
| Taxes | 0.0 | 2.0 | 0.6 | 0.3 | 2.0 | 4.5 | 2.3 | 1.5 |
| Supplemental non-cash disclosures: | | | | | | | | |