| In millions, except per share items | Dec-31-22 | Dec-31-21 | Dec-31-20 | Dec-31-19 |
| | 10-K | 10-K | 10-K | 10-K |
| Net income | -127.9 | -126.2 | -67.2 | -43.9 |
| Depreciation and amortization | 22.8 | 12.8 | 7.5 | 3.8 |
| Asset impairment charges | 11.6 | | 4.8 | |
| Stock-based compensation | 19.5 | 7.2 | 1.0 | 0.6 |
| Change in working capital [+] | 33.8 | 30.6 | 13.2 | 5.4 |
| Accounts receivable | -3.1 | -7.0 | 0.7 | -2.6 |
| Inventories | -4.7 | -11.7 | -5.4 | -4.3 |
| Other current assets | | | | -1.2 |
| Accounts payable | -5.3 | 11.3 | -1.9 | 4.3 |
| Accrued expenses | 6.4 | 7.5 | 4.1 | 0.1 |
| Other | 40.4 | 30.5 | 15.7 | 9.1 |
| Other operating activities | -53.2 | -42.1 | -12.1 | -10.3 |
| Cash from operations | -93.4 | -117.8 | -52.7 | -44.4 |
| |
| Capital expenditures | -16.5 | -31.5 | -9.9 | -6.8 |
| Purchases of property and equipment | -16.5 | -31.5 | -9.9 | -6.8 |
| Acquisitions | -1.0 | -116.3 | | -26.8 |
| Purchases of short-term investments, net | -39.9 | -6.8 | -92.5 | 29.1 |
| Purchases of short-term investments | -372.2 | -648.9 | -208.8 | -36.3 |
| Sales of short-term investments | 332.3 | 642.1 | 116.3 | 65.5 |
| Other cash from investing | 17.1 | | 1.7 | |
| Cash from investing | -40.2 | -154.6 | -100.7 | -4.5 |
| |
| Option exercises | 2.3 | 0.7 | 0.1 | 0.1 |
| Other cash from financing | 100.3 | 342.2 | 160.8 | 48.6 |
| Cash from financing | 98.0 | 341.6 | 160.7 | 48.5 |
| |
| Free cash flow | -109.9 | -149.2 | -62.5 | -51.2 |
| Per share (diluted) | ($0.61) | ($1.22) | ($0.75) | ($0.76) |
| |
| Cash paid for interest | 14.4 | 6.6 | 4.7 | 0.6 |
| Cash paid for income taxes | 0.1 | 0.1 | | 0.0 |