| 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 | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | -15.8 | -24.7 | 147.0 | -22.9 | -21.6 | -32.5 | -43.1 | -91.2 |
| Depreciation and amortization | 9.5 | 9.5 | 9.0 | 9.0 | 9.6 | 10.0 | 10.1 | 10.1 |
| Asset impairment charges | | | | | | | 8.8 | 55.8 |
| Stock-based compensation | 0.2 | 0.4 | -0.3 | 0.6 | 0.6 | -0.6 | 1.4 | 1.1 |
| Deferred taxes | 0.8 | 0.0 | 0.3 | 0.7 | 0.4 | -0.8 | -0.6 | 7.4 |
| Change in working capital [+] | -13.0 | -13.3 | 30.3 | 2.7 | -1.4 | -36.7 | 18.7 | 11.9 |
| Accounts receivable | -18.4 | 9.4 | -2.2 | -1.7 | -11.0 | -18.5 | 15.5 | 10.0 |
| Inventories | 0.3 | -1.5 | 1.4 | -1.5 | -0.3 | -1.3 | 0.9 | 0.4 |
| Other current assets | -0.8 | -1.3 | 3.8 | -3.7 | 2.6 | -5.9 | 0.5 | -1.9 |
| Accounts payable | 4.1 | -0.1 | -7.3 | -0.1 | -1.2 | -4.7 | -4.8 | 2.6 |
| Accrued expenses | 3.1 | -20.3 | 9.3 | 2.5 | 9.3 | -5.9 | 6.3 | 0.8 |
| Income taxes | -1.4 | 0.4 | 25.2 | 7.2 | -0.7 | -0.3 | 34.0 | 0.0 |
| Other | | | | | | | -33.7 | |
| Other operating activities | 12.4 | 10.4 | -197.8 | 16.9 | 9.0 | 10.5 | 5.0 | 3.7 |
| Cash from operations | -5.9 | -17.8 | -11.6 | 7.0 | -3.4 | -50.0 | 0.4 | -1.1 |
| |
| Capital expenditures [+] | -2.4 | -2.7 | -3.7 | -7.0 | -6.9 | -7.1 | -5.2 | -3.2 |
| Purchases of property and equipment | -2.4 | -2.7 | -3.7 | -7.0 | -6.9 | -7.1 | -5.2 | -3.2 |
| Sales of property and equipment | | 0.3 | 0.0 | 2.0 | 2.1 | 3.0 | 3.4 | 0.1 |
| Other cash from investing | | | 260.8 | | | | | |
| Cash from investing | -2.4 | -2.4 | 257.2 | -5.0 | -4.8 | -4.0 | -1.9 | -3.1 |
| |
| Issuance of common stock, net | | | -0.1 | | -0.1 | 9.8 | | |
| Financing costs | -5.3 | | -0.1 | -3.0 | -0.3 | -10.3 | -7.6 | -0.6 |
| Other cash from financing | 1.4 | -6.2 | -255.3 | -4.5 | 22.6 | 21.9 | 42.5 | 3.5 |
| Cash from financing | 6.7 | -6.2 | -255.3 | -1.5 | 22.8 | 42.0 | 50.1 | 4.1 |
| |
| Free cash flow | -8.2 | -20.5 | -15.3 | 0.0 | -10.3 | -57.1 | -4.8 | -4.2 |
| Per share (diluted) | ($1.89) | ($4.71) | ($3.64) | $0.00 | ($2.39) | ($15.14) | ($1.56) | ($0.14) |
| |
| Cash paid for income taxes | | | -0.6 | | | | | |