| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 8-K | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | -50.2 | 0.0 | -29.3 | -21.6 | -25.7 | -21.4 | -17.7 | -20.4 |
| Depreciation and amortization [+] | 6.2 | | 2.4 | 2.1 | 2.5 | 1.9 | 1.6 | 1.3 |
| Depreciation | 6.2 | | 2.4 | 2.1 | -1.9 | 1.9 | 1.6 | 1.3 |
| Asset impairment charges | 18.8 | | -0.2 | 0.1 | 0.3 | 0.2 | 0.2 | 0.1 |
| Stock-based compensation | 8.1 | | 5.1 | 5.2 | 6.6 | 5.4 | 5.1 | 6.0 |
| Change in working capital [+] | -0.6 | | 30.3 | -2.0 | 5.6 | 6.7 | 36.0 | -4.6 |
| Accounts receivable | 7.0 | | 1.7 | -6.4 | 3.9 | 8.2 | -1.2 | -5.0 |
| Inventories | -4.1 | | -0.6 | 0.1 | -0.2 | -1.3 | -1.5 | 0.6 |
| Other current assets | 3.4 | | 1.4 | 0.6 | -0.7 | 2.1 | -0.2 | -2.7 |
| Accounts payable | 7.7 | | 2.1 | -0.4 | 0.7 | 0.3 | -4.2 | 3.6 |
| Accrued expenses | -14.7 | | | | -0.6 | | | |
| Other | | | 25.6 | 4.1 | 2.6 | -2.6 | 43.1 | -1.1 |
| Other operating activities | -21.7 | | -18.3 | -0.7 | 0.3 | -2.9 | -39.7 | 2.9 |
| Cash from operations | -39.4 | | -10.0 | -16.9 | -10.5 | -10.1 | -14.4 | -14.6 |
| |
| Capital expenditures | -0.5 | | -0.3 | -1.0 | -2.4 | -4.4 | -5.1 | -6.3 |
| Purchases of property and equipment | -0.5 | | -0.3 | -1.0 | -2.4 | -4.4 | -5.1 | -6.3 |
| Acquisitions | -40.3 | | | | | | | |
| Sales of short-term investments, net [+] | 46.7 | | -31.9 | -4.7 | -9.4 | | | |
| Purchases of short-term investments | -2.5 | | -46.0 | -9.4 | -9.4 | | | |
| Sales of short-term investments | 49.1 | | 14.2 | 4.8 | | | | |
| Other cash from investing | -0.3 | | | | | | | |
| Cash from investing | 5.7 | | -32.2 | -5.6 | -11.8 | -4.4 | -5.1 | -6.3 |
| |
| Repurchase of common stock, net | | | -0.7 | 0.1 | -0.6 | 0.6 | -3.6 | 1.5 |
| Option exercises | 0.2 | | 0.0 | 0.1 | 0.4 | 0.4 | 0.6 | 1.3 |
| Financing costs | -1.2 | | | | | | | 0.1 |
| Other cash from financing | -22.7 | | 8.9 | 0.1 | 1.3 | 0.8 | 4.9 | 2.8 |
| Cash from financing | -21.7 | | 8.1 | 0.2 | 0.4 | 1.0 | 0.6 | 2.9 |
| |
| Free cash flow | -39.9 | | -10.4 | -17.9 | -12.9 | -14.4 | -19.5 | -20.9 |
| Per share (diluted) | ($0.40) | | ($0.15) | ($0.26) | ($0.19) | ($0.21) | ($0.29) | ($0.31) |