| In millions, except per share items | Jun-30-23 | Mar-31-23 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 8-K | 10-Q | 10-Q |
| Net income | -69.8 | -88.0 | -77.0 | -71.4 | -81.5 | -69.3 | 16.5 | -41.0 |
| Depreciation and amortization [+] | 3.1 | 3.0 | | 2.6 | 2.5 | | | |
| Depreciation | 2.8 | 2.8 | | 2.3 | 2.3 | 0.2 | | |
| Amortization of intangible assets | 0.2 | 0.2 | | 0.2 | 0.2 | | | |
| Asset impairment charges | 0.8 | 3.5 | | 1.4 | 0.4 | | | |
| Stock-based compensation | 17.9 | 18.0 | | 19.0 | 22.7 | | | |
| Change in working capital [+] | 9.4 | -41.6 | | -2.9 | -24.8 | | | |
| Accounts receivable | 5.6 | -10.8 | | 0.8 | -3.6 | | | |
| Inventories | -6.4 | -13.3 | | -8.3 | -6.7 | | | |
| Other current assets | 0.8 | -6.9 | | 0.8 | -1.2 | | | |
| Accounts payable | -0.8 | 5.1 | | -5.0 | 6.4 | | | |
| Accrued expenses | 7.2 | -13.2 | | 5.9 | -17.2 | | | |
| Other | 3.0 | -2.5 | | 2.9 | -2.5 | | | |
| Other operating activities | -3.0 | 10.4 | 13.9 | -9.2 | 1.7 | | -57.2 | 25.3 |
| Cash from operations | -41.7 | -94.7 | -63.1 | -60.6 | -79.0 | | -40.7 | -15.7 |
| |
| Capital expenditures | -2.3 | -3.7 | 4.2 | -4.0 | -3.6 | | 1.1 | 1.6 |
| Purchases of property and equipment | -2.3 | -3.7 | 4.2 | -4.0 | -3.6 | | 1.1 | 1.6 |
| Sales of short-term investments | 147.3 | 164.5 | 124.9 | 108.5 | 122.1 | | 251.3 | 111.7 |
| Sales of short-term investments | 147.3 | 164.5 | 124.9 | 108.5 | 122.1 | | 251.3 | 111.7 |
| Other cash from investing | -243.6 | -233.3 | -75.2 | -164.7 | -76.4 | | -544.1 | -574.1 |
| Cash from investing | -98.6 | -72.6 | 53.9 | -60.3 | 42.1 | | -291.6 | -460.8 |
| |
| Issuance of common stock, net | | 189.2 | 3.5 | | | | 4.8 | 3.0 |
| Option exercises | 2.6 | 7.2 | | 0.8 | 5.6 | | | |
| Financing costs | -6.8 | | | | | | | |
| Other cash from financing | -9.0 | 14.0 | -0.4 | 1.3 | 10.8 | | 294.8 | -0.1 |
| Cash from financing | -4.7 | 196.0 | 3.1 | 0.5 | 5.2 | | 299.7 | 2.9 |
| |
| Free cash flow | -44.0 | -98.4 | -58.9 | -64.6 | -82.7 | | -39.5 | -14.1 |
| Per share (diluted) | ($0.18) | ($0.41) | ($0.26) | ($0.29) | ($0.37) | | ($0.18) | ($0.07) |
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