| In millions, except per share items | Jun-30-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-K | 8-K | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -13.3 | -13.6 | -8.5 | -8.4 | -12.3 | -9.1 | -12.4 | -15.4 |
| Depreciation and amortization | | 2.5 | | 0.8 | 0.9 | 0.2 | 0.8 | 0.8 |
| Stock-based compensation | | | | | | -17.0 | 5.9 | |
| Change in working capital [+] | | 6.4 | | | | 21.8 | -8.6 | |
| Accounts receivable | | | | | | 1.7 | 0.4 | |
| Inventories | | | | | | 12.1 | -4.1 | |
| Accounts payable | | | | | | -2.5 | -4.9 | |
| Other | | 6.4 | | | | 10.5 | | |
| Other operating activities | 13.3 | -20.9 | | 7.3 | -10.0 | 3.0 | 7.8 | 5.9 |
| Cash from operations | 0.0 | -25.6 | | -0.3 | -21.5 | -1.2 | -6.6 | -8.7 |
| |
| Capital expenditures | 0.0 | 2.0 | | 0.1 | 0.1 | 1.4 | -0.2 | 0.0 |
| Purchases of property and equipment | | 2.0 | | 0.1 | 0.1 | 1.4 | -0.2 | 0.0 |
| Sales of short-term investments | | | | 7.2 | 9.4 | 10.1 | 22.1 | 10.0 |
| Sales of short-term investments | | | | 7.2 | 9.4 | 10.1 | 22.1 | 10.0 |
| Other cash from investing | | 6.5 | | -12.7 | -0.9 | -51.8 | -0.1 | -0.2 |
| Cash from investing | 0.0 | 8.5 | | -5.5 | 8.6 | -40.3 | 21.7 | 9.9 |
| |
| Issuance of common stock, net | | -0.1 | | -0.1 | | 3.1 | -0.1 | -0.3 |
| Option exercises | | | | 0.4 | 2.1 | 4.3 | 3.0 | 1.0 |
| Other cash from financing | | 4.3 | | 0.7 | 4.6 | 13.3 | 7.6 | 1.4 |
| Cash from financing | 0.0 | 4.2 | | 0.2 | 2.4 | 12.1 | 4.6 | 0.1 |
| |
| Free cash flow | 0.0 | -23.6 | | -0.3 | -21.3 | 0.1 | -6.8 | -8.6 |
| Per share (diluted) | $0.00 | ($0.13) | | $0.00 | ($0.12) | $0.00 | ($0.04) | ($0.05) |
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