| In millions, except per share items | Jun-30-23 | Mar-31-23 | Jun-30-22 | Mar-31-22 | Sep-30-21 | Jun-30-21 | Mar-31-21 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q |
| Net income | -0.3 | -0.3 | 0.0 | 0.6 | 0.8 | 0.0 | 0.0 |
| Change in working capital [+] | 0.2 | 0.2 | 0.3 | 0.3 | -0.6 | 0.0 | |
| Accrued expenses | 0.2 | 0.2 | 0.1 | 0.1 | | | |
| Other | | | 0.2 | 0.2 | -0.6 | 0.0 | |
| Other operating activities | -0.1 | -0.1 | -0.5 | -1.0 | -1.2 | | 0.0 |
| Cash from operations | -0.1 | -0.2 | -0.1 | -0.1 | -1.0 | -0.1 | 0.0 |
| |
| Capital expenditures | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Sales of short-term investments, net [+] | -0.1 | 0.8 | | | | | |
| Purchases of short-term investments | -18.6 | -9.0 | | | | | |
| Sales of short-term investments | 18.5 | 9.9 | | | | | |
| Other cash from investing | -0.1 | | | | -80.0 | | |
| Cash from investing | -0.1 | 0.8 | 0.0 | 0.0 | -80.0 | 0.0 | 0.0 |
| |
| Issuance of common stock, net | | | | | | 0.0 | |
| Other cash from financing | 0.1 | -0.7 | 0.2 | | 81.3 | 0.1 | |
| Cash from financing | 0.1 | -0.7 | 0.2 | 0.0 | 81.3 | 0.1 | 0.0 |
| |
| Free cash flow | -0.1 | -0.2 | -0.1 | -0.1 | -1.0 | -0.1 | 0.0 |
| Per share (diluted) | ($0.03) | ($0.07) | ($0.01) | ($0.01) | ($0.12) | ($0.04) | $0.00 |