| 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 |
| | 10-Q | 8-K | 10-Q | 10-Q | 10-K | 10-K | 10-Q |
| Net income | | | -91.7 | -82.0 | -87.5 | -73.2 | -39.2 |
| Depreciation and amortization | | | 2.4 | 2.1 | 2.0 | | 2.1 |
| Asset impairment charges | | | 0.1 | 0.6 | 0.5 | | 0.8 |
| Stock-based compensation | | | 25.8 | 21.2 | 15.7 | | 13.4 |
| Change in working capital [+] | | | 18.0 | 13.5 | 24.0 | | 11.0 |
| Accounts receivable | | | 1.0 | -6.0 | 1.5 | | -5.9 |
| Inventories | | | -8.9 | -2.0 | -0.8 | | 0.8 |
| Other current assets | | | 0.3 | -0.3 | -0.3 | | -0.3 |
| Accounts payable | | | 7.9 | 5.8 | 4.6 | | 1.8 |
| Accrued expenses | | | 1.9 | 0.7 | 3.6 | | -0.6 |
| Other | | | 16.0 | 15.3 | 15.2 | | 15.3 |
| Other operating activities | | | -30.4 | -1.6 | -0.8 | 13.7 | -2.7 |
| Cash from operations | | | -75.8 | -46.3 | -46.1 | -32.2 | -14.7 |
| |
| Capital expenditures [+] | | | -5.8 | -6.6 | -4.7 | -1.4 | -1.4 |
| Purchases of property and equipment | | | -5.8 | -6.6 | -4.7 | | -1.4 |
| Sales of property and equipment | | | | | 0.0 | | 0.0 |
| Purchases of short-term investments, net | | | 5.0 | 0.6 | -82.6 | | -111.2 |
| Purchases of short-term investments | | | -150.3 | -140.1 | -140.1 | | -142.1 |
| Sales of short-term investments | | | 155.3 | 140.7 | 57.5 | | 30.9 |
| Cash from investing | | | -0.9 | -6.0 | -87.3 | -112.6 | -112.6 |
| |
| Option exercises | | | 6.0 | 4.3 | 3.9 | | 3.0 |
| Financing costs | | | | | | | -4.7 |
| Other cash from financing | | | 11.3 | -37.6 | -38.9 | | 139.3 |
| Cash from financing | | | 5.3 | -37.4 | -38.1 | 141.0 | 141.0 |
| |
| Free cash flow | | | -81.6 | -53.0 | -50.8 | -33.6 | -16.1 |
| Per share (diluted) | | | ($0.51) | ($0.37) | ($0.40) | ($0.31) | ($0.18) |
| |
| Cash paid for interest | | | | | | | 2.5 |