| 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 | Dec-31-20 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 8-K | 10-Q | 10-Q | 10-K |
| Net income | -24.9 | -50.7 | -64.7 | -54.5 | -60.8 | -40.2 | -41.5 | -3.3 |
| Depreciation and amortization | 0.2 | 0.1 | 0.0 | 0.0 | | | | |
| Stock-based compensation | 7.2 | 7.2 | 5.6 | 5.7 | | | | 0.1 |
| Deferred taxes | -23.5 | | 0.1 | | | | | |
| Change in working capital [+] | 2.6 | -9.7 | 6.1 | 3.4 | | | | 0.1 |
| Other current assets | -2.6 | 1.9 | -1.1 | 2.0 | | | | -0.6 |
| Accounts payable | -1.6 | -1.8 | 1.8 | -1.2 | | | | 0.0 |
| Accrued expenses | 6.8 | -9.8 | 5.4 | 2.6 | | | | 0.7 |
| Other operating activities | -5.7 | 5.3 | -7.0 | -4.6 | | | 11.3 | -0.2 |
| Cash from operations | -44.1 | -47.8 | -59.9 | -50.0 | | -40.2 | -30.1 | -3.3 |
| |
| Capital expenditures | 0.0 | -0.1 | -0.2 | -0.2 | | 0.0 | 0.0 | 0.0 |
| Purchases of property and equipment | 0.0 | -0.1 | -0.2 | -0.2 | | | | |
| Purchases of short-term investments | -71.1 | -86.2 | | | | | | |
| Purchases of short-term investments | -71.1 | -86.2 | | | | | | |
| Cash from investing | -71.1 | -86.3 | -0.2 | -0.2 | | 0.0 | 0.0 | 0.0 |
| |
| Option exercises | 0.0 | | 0.1 | 0.3 | | | | |
| Other cash from financing | 0.0 | | 0.1 | 0.4 | | | | 1.3 |
| Cash from financing | 0.0 | 0.0 | 0.1 | 0.1 | | 0.0 | 0.0 | 1.3 |
| |
| Free cash flow | -44.1 | -47.9 | -60.1 | -50.3 | | -40.2 | -30.1 | -3.3 |
| Per share (diluted) | ($0.46) | ($0.50) | ($0.64) | ($0.56) | | ($0.45) | ($0.47) | |
| |
| Cash paid for interest | 2.5 | 2.3 | 1.7 | 1.5 | | | | |