| In millions, except per share items | Jun-30-23 | Mar-31-23 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 |
| | 8-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
| Net income | 0.0 | 17.3 | 6.1 | 17.3 | 3.5 | 19.1 | 23.8 | 19.3 |
| Depreciation and amortization [+] | | | 0.3 | | 0.3 | 0.2 | 0.2 | 0.3 |
| Depreciation | | | 0.3 | | 0.3 | 0.2 | 0.2 | 0.3 |
| Stock-based compensation | | | 0.9 | | 0.6 | 0.4 | 0.7 | 0.6 |
| Deferred taxes | | | -2.0 | | 0.7 | 0.0 | 0.1 | 0.5 |
| Change in working capital [+] | | 5.1 | 4.7 | 5.9 | -12.6 | -0.3 | -0.6 | 5.7 |
| Income taxes | | 4.0 | 2.7 | 3.4 | -9.1 | 0.4 | -1.7 | 3.6 |
| Other | | 1.1 | 2.1 | 2.4 | -3.5 | -0.8 | 1.2 | 2.1 |
| Other operating activities | | -8.9 | 7.8 | -16.1 | 16.1 | -16.0 | -14.8 | -9.7 |
| Cash from operations | | 13.5 | 17.9 | 7.1 | 8.6 | 3.4 | 9.4 | 16.6 |
| |
| Capital expenditures [+] | | 0.0 | -0.8 | 0.3 | -0.6 | -0.1 | -0.2 | -0.4 |
| Purchases of property and equipment | | 0.0 | -0.8 | 0.3 | -0.6 | -0.1 | -0.2 | -0.4 |
| Sales of property and equipment | | | | | | | | 0.0 |
| Sales of short-term investments, net [+] | | 72.4 | 60.8 | 86.8 | 46.2 | 84.0 | 25.8 | -32.1 |
| Purchases of short-term investments | | 48.6 | -23.8 | 54.2 | -71.8 | -25.4 | -57.9 | -64.4 |
| Sales of short-term investments | | 23.8 | 84.6 | 32.6 | 118.0 | 109.3 | 83.8 | 32.3 |
| Other cash from investing | | -99.6 | -13.6 | -126.1 | -23.6 | -16.0 | -4.9 | -7.2 |
| Cash from investing | | -27.2 | 46.4 | -39.0 | 22.1 | 67.8 | 20.7 | -39.6 |
| |
| Cash dividends paid | | 6.5 | -6.0 | 6.0 | -83.0 | -5.6 | -5.6 | -5.7 |
| Repurchase of common stock, net | | | -3.6 | | | | | |
| Other cash from financing | | -13.0 | 0.0 | -14.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Cash from financing | | -6.5 | -9.7 | -8.1 | -83.0 | -5.6 | -5.7 | -5.7 |
| |
| Free cash flow | | 13.5 | 17.1 | 7.4 | 8.0 | 3.3 | 9.2 | 16.2 |
| Per share (diluted) | | $0.70 | $0.88 | $0.38 | $0.41 | $0.17 | $0.47 | $0.83 |
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