| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 8-K | 10-Q | 8-K | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Net income | -11.2 | -26.2 | -7.6 | 29.3 | -62.4 | -70.7 | -59.5 | -83.0 |
| Depreciation and amortization [+] | | 9.4 | | 9.4 | 9.4 | 9.5 | 9.5 | 9.5 |
| Depreciation | 9.0 | 0.4 | | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 |
| Amortization of intangible assets | | 9.0 | | 9.0 | 9.0 | 9.0 | 9.0 | 9.0 |
| Asset impairment charges | | 0.3 | | 2.1 | 5.3 | 8.5 | 1.7 | 0.4 |
| Stock-based compensation | | 2.5 | | 6.9 | 4.5 | 4.6 | 5.6 | 6.5 |
| Change in working capital [+] | | 1.5 | | -50.3 | -16.6 | -34.9 | -26.0 | -22.8 |
| Accounts receivable | | 21.4 | | -17.3 | -13.7 | -1.2 | -14.7 | 0.2 |
| Inventories | | 7.3 | | 6.4 | -5.2 | 9.4 | 0.4 | -16.5 |
| Other current assets | | 7.4 | | -8.5 | 9.0 | 6.4 | -28.3 | 1.0 |
| Accounts payable | | -9.0 | | -1.4 | -7.4 | 3.2 | -13.8 | 3.8 |
| Accrued expenses | | -25.0 | | -23.1 | 4.4 | -39.8 | 30.8 | -10.8 |
| Other | | -0.6 | | -6.5 | -3.7 | -12.9 | -0.4 | -0.5 |
| Other operating activities | | -5.0 | | -28.0 | 38.1 | 20.2 | 12.5 | 26.3 |
| Cash from operations | | -17.5 | | -30.7 | -21.6 | -62.8 | -56.3 | -63.1 |
| |
| Capital expenditures | | 0.0 | | 0.0 | -0.1 | 0.0 | 0.0 | 0.0 |
| Purchases of property and equipment | | | | | -0.1 | | | |
| Sales of short-term investments | | | | | | | | 20.0 |
| Sales of short-term investments | | | | | | | | 20.0 |
| Cash from investing | | 0.0 | | 0.0 | -0.1 | 0.0 | 0.0 | 20.0 |
| |
| Issuance of common stock, net | | | | -0.1 | 7.2 | 5.4 | 16.1 | 37.4 |
| Option exercises | | 0.0 | | 0.1 | 0.4 | | 0.4 | |
| Other cash from financing | | -15.9 | | 0.1 | 40.7 | | 0.8 | |
| Cash from financing | | -16.0 | | 0.0 | 47.5 | 5.4 | 16.5 | 37.4 |
| |
| Free cash flow | | -17.5 | | -30.7 | -21.7 | -62.8 | -56.3 | -63.1 |
| Per share (diluted) | | ($0.09) | | ($0.16) | ($0.12) | ($0.38) | ($0.32) | ($0.39) |
| |