| In millions, except per share items | Jun-30-23 | Jun-05-23 | Mar-31-23 | Mar-05-23 | Dec-05-22 | Jun-30-22 | Jun-05-22 | Mar-31-22 |
| | 10-Q | 8-K | 10-Q | 8-K | 8-K | 10-Q | 8-K | 10-Q |
| Net income | -35.2 | 0.0 | -38.7 | -38.7 | 0.0 | -37.1 | 0.0 | -35.4 |
| Depreciation and amortization | 0.5 | | 0.5 | | | 0.5 | | 0.5 |
| Other operating activities | -1.7 | | 5.1 | | | 8.4 | | 4.6 |
| Cash from operations | -36.4 | | -33.0 | | | -28.2 | | -30.3 |
| |
| Capital expenditures | 0.0 | | 0.1 | | | 0.9 | | 5.2 |
| Purchases of property and equipment | 0.0 | | 0.1 | | | 0.9 | | 5.2 |
| Sales of short-term investments, net [+] | 82.4 | | 82.5 | | | 64.0 | | 85.3 |
| Purchases of short-term investments | 38.4 | | 31.4 | | | 21.7 | | 5.9 |
| Sales of short-term investments | 44.0 | | 51.1 | | | 42.3 | | 79.4 |
| Other cash from investing | -76.9 | | -63.1 | | | -45.1 | | -22.3 |
| Cash from investing | 5.5 | | 19.5 | | | 19.7 | | 68.3 |
| |
| Issuance of common stock, net | | | 17.5 | | | | | |
| Option exercises | 0.3 | | 0.1 | | | 0.1 | | 0.0 |
| Other cash from financing | 0.7 | | 0.1 | | | 0.2 | | 0.0 |
| Cash from financing | 0.3 | | 17.6 | | | 0.1 | | 0.0 |
| |
| Free cash flow | -36.4 | | -32.9 | | | -27.3 | | -25.1 |
| Per share (diluted) | ($0.48) | | ($0.44) | | | ($0.71) | | ($0.65) |