| In millions, except per share items | Dec-31-22 | Dec-05-22 | Jun-30-22 | Dec-31-21 | Dec-05-21 | Jun-30-21 | Dec-31-20 | Dec-31-19 |
| | 10-K | 8-K | 8-K | 10-K | 8-K | 8-K | 10-K/A | 10-K/A |
| Net income | 13.3 | 13.3 | 5.9 | 10.8 | 10.8 | 5.6 | 10.6 | 10.4 |
| Depreciation and amortization [+] | | | | 0.9 | | | 0.9 | 0.7 |
| Depreciation | | | | | | | 0.8 | 0.7 |
| Amortization | | | | | | | 0.1 | 0.1 |
| Deferred taxes | | | | | | | 0.0 | 0.1 |
| Change in working capital | | | | -1.2 | | | -2.2 | 1.5 |
| Other | | | | -1.2 | | | -2.2 | 1.5 |
| Other operating activities | -9.7 | | | 4.5 | | | 5.0 | -0.8 |
| Cash from operations | 3.6 | | | 15.0 | | | 14.2 | 11.9 |
| |
| Capital expenditures [+] | 0.0 | | | 2.1 | | | -2.1 | -2.8 |
| Purchases of property and equipment | | | | 2.0 | | | -2.0 | -2.7 |
| Capitalized product costs | 0.0 | | | 0.1 | | | -0.2 | -0.1 |
| Sales of property and equipment | | | | | | | 0.7 | |
| Purchases of short-term investments, net | 86.6 | | | 102.9 | | | -69.8 | -18.4 |
| Purchases of short-term investments | 48.9 | | | 46.3 | | | -132.4 | -45.9 |
| Sales of short-term investments | 37.7 | | | 56.6 | | | 62.6 | 27.5 |
| Other cash from investing | -86.8 | | | -162.9 | | | -64.9 | -7.6 |
| Cash from investing | -0.1 | | | -58.0 | | | -136.1 | -28.8 |
| |
| Cash dividends paid | 3.5 | | | 3.3 | | | -3.1 | -3.0 |
| Repurchase of common stock, net | | | | -0.9 | | | | |
| Other cash from financing | -7.4 | | | 102.6 | | | 204.7 | 76.3 |
| Cash from financing | -3.9 | | | 105.0 | | | 201.6 | 73.4 |
| |
| Free cash flow | 3.6 | | | 17.0 | | | 12.2 | 9.2 |
| Per share (diluted) | | | | $6.26 | | | $4.39 | $3.32 |
| |
| Cash paid for interest | 2.4 | | | 2.0 | | | 3.0 | 4.0 |
| Cash paid for income taxes | 2.7 | | | 2.4 | | | 2.3 | 4.7 |