| In millions, except per share items | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-Q | 10-Q | 8-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | -38.6 | -60.8 | -52.9 | -63.9 | -88.1 | -66.1 | -45.7 | -31.2 |
| Depreciation and amortization | -1.1 | -0.7 | -0.4 | 0.0 | 15.8 | 16.4 | 17.3 | 17.9 |
| Asset impairment charges | | 30.6 | | | 18.3 | | | |
| Stock-based compensation | -0.7 | 0.0 | 0.2 | 0.0 | 7.6 | 7.7 | 7.8 | 8.2 |
| Deferred taxes | | | | 0.0 | 4.7 | 7.0 | -4.7 | 0.9 |
| Change in working capital [+] | -22.9 | -31.4 | -11.2 | 0.0 | 30.5 | 27.0 | 26.1 | 6.1 |
| Accounts receivable | -19.8 | -54.6 | 1.5 | 0.0 | 18.8 | 27.9 | 25.0 | 11.1 |
| Inventories | 1.5 | 0.9 | 0.6 | 0.0 | -0.7 | 0.5 | 0.4 | -0.9 |
| Accounts payable | -16.5 | 10.1 | -11.5 | 0.0 | 17.8 | 4.5 | -2.8 | -12.4 |
| Accrued expenses | -1.4 | 2.3 | -3.1 | 0.0 | -8.2 | -8.7 | 0.7 | 5.5 |
| Other | 13.3 | 9.8 | 1.4 | | | | | 2.8 |
| Other operating activities | 81.1 | 38.6 | 24.5 | 45.6 | -1.1 | 10.6 | -7.8 | -4.8 |
| Cash from operations | 24.9 | -29.0 | -16.1 | 0.0 | -12.3 | 2.6 | -7.1 | -3.0 |
| |
| Capital expenditures [+] | -4.9 | -2.3 | -1.4 | 0.0 | -1.8 | -1.9 | -1.8 | -4.4 |
| Purchases of property and equipment | -4.9 | -2.3 | -1.4 | 0.0 | -1.8 | -1.9 | -1.8 | -4.4 |
| Sales of property and equipment | 0.1 | 1.2 | 1.2 | | 1.6 | 0.6 | 1.1 | 2.1 |
| Other cash from investing | | | | -1.3 | | | | |
| Cash from investing | -6.0 | -2.4 | -1.5 | 0.0 | -0.2 | -1.3 | -0.7 | -2.3 |
| |
| Issuance of common stock, net | | | | 0.0 | | 0.2 | | 0.0 |
| Option exercises | 0.2 | 0.3 | 0.4 | | 0.5 | 0.5 | 0.4 | 0.4 |
| Financing costs | | | | 0.0 | -1.4 | -1.6 | -2.2 | -1.3 |
| Other cash from financing | 3.2 | 3.1 | 2.9 | 0.4 | -3.0 | -3.6 | -14.4 | -13.2 |
| Cash from financing | 1.7 | 1.6 | 1.6 | 0.0 | -2.0 | -2.2 | -12.7 | -12.3 |
| |
| Free cash flow | 20.0 | -31.2 | -17.4 | 0.0 | -14.1 | 0.7 | -8.9 | -7.3 |
| Per share (diluted) | $0.74 | ($1.16) | ($0.65) | $0.00 | ($0.53) | $0.03 | ($0.34) | ($0.28) |
| |
| Cash paid for interest | 1.7 | 1.8 | 1.3 | | 2.9 | 2.6 | 3.0 | 1.8 |
| Cash paid for income taxes | -10.4 | | | 0.0 | -2.6 | -0.1 | | 0.5 |