| 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 |
| | 10-Q | 8-K | 10-Q | 10-Q | 10-K | 10-K | 10-Q | 10-Q |
| Net income | -24.8 | 0.0 | -23.0 | -4.0 | -23.3 | -41.4 | -13.3 | -9.5 |
| Depreciation and amortization | 3.6 | | 1.0 | 0.8 | 0.7 | | 0.7 | 0.7 |
| Asset impairment charges | | | -0.1 | 0.1 | 0.1 | | 0.4 | 0.0 |
| Stock-based compensation | 11.5 | | 9.5 | 8.7 | 7.7 | | 4.8 | 3.3 |
| Change in working capital [+] | -23.4 | | 6.8 | -10.3 | 21.5 | | 2.3 | 0.2 |
| Accounts receivable | -5.0 | | 8.3 | -5.0 | -2.4 | | 1.4 | 2.6 |
| Inventories | -6.9 | | -6.1 | -1.9 | -0.9 | | 0.8 | -0.7 |
| Other current assets | 1.0 | | 0.5 | -0.5 | 0.3 | | -0.1 | -0.4 |
| Accounts payable | -3.7 | | 1.3 | 2.2 | 4.5 | | -0.8 | 1.0 |
| Accrued expenses | -9.8 | | 2.9 | -5.5 | 4.5 | | 1.7 | -2.6 |
| Other | 0.9 | | 0.0 | 0.5 | 15.5 | | -0.6 | 0.4 |
| Other operating activities | -36.2 | | -26.3 | 0.6 | -21.2 | 16.5 | 2.6 | 1.4 |
| Cash from operations | -69.3 | | -32.2 | -4.1 | -14.5 | -25.0 | -2.7 | -3.9 |
| |
| Capital expenditures [+] | -2.4 | | 0.0 | -2.2 | -3.7 | 0.0 | -0.8 | -0.2 |
| Purchases of property and equipment | -2.1 | | 0.0 | -2.2 | -3.7 | | -0.8 | -0.2 |
| Capitalized product costs | -0.2 | | | | | | | |
| Sales of property and equipment | | | | | 0.0 | | 0.0 | |
| Purchases of short-term investments, net | -0.3 | | 8.6 | 7.7 | -11.4 | | 4.3 | -75.5 |
| Purchases of short-term investments | -98.1 | | -34.4 | -77.9 | -38.0 | | -24.1 | -78.0 |
| Sales of short-term investments | 97.8 | | 43.0 | 85.7 | 26.6 | | 28.4 | 2.5 |
| Cash from investing | -2.7 | | 8.7 | 5.6 | -15.1 | 0.0 | 3.5 | -75.7 |
| |
| Option exercises | 0.4 | | 3.6 | 1.2 | 1.1 | | 1.9 | 0.8 |
| Financing costs | | | | | | | -4.5 | -0.2 |
| Other cash from financing | 0.8 | | 7.3 | 2.5 | 1.5 | | -41.6 | 1.2 |
| Cash from financing | 0.4 | | 3.6 | 1.2 | 0.4 | 0.0 | -39.1 | 0.6 |
| |
| Free cash flow | -71.4 | | -32.1 | -6.3 | -18.2 | -25.0 | -3.5 | -4.1 |
| Per share (diluted) | ($0.38) | | ($0.18) | ($0.03) | ($0.13) | ($0.18) | ($0.03) | ($0.04) |
| |
| Cash paid for interest | | | | | | | 0.9 | 0.8 |