| In millions, except per share items | Mar-31-19 | Sep-30-18 | Jun-30-18 | Mar-31-18 | Dec-31-17 | Sep-30-17 | Jun-30-17 | Mar-31-17 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
| Net income | | -39.0 | -43.1 | -41.9 | -43.1 | -46.5 | -39.5 | -27.3 |
| Depreciation and amortization [+] | | 9.1 | 9.3 | 9.4 | 9.6 | 9.6 | 9.5 | 9.4 |
| Depreciation | | 7.8 | 8.0 | 8.3 | 8.8 | 9.1 | 9.3 | 9.4 |
| Amortization of intangible assets | | 1.2 | 1.2 | 1.1 | 0.8 | 0.5 | 0.2 | |
| Asset impairment charges | | 2.4 | 2.7 | 3.4 | 2.9 | 4.7 | 4.1 | |
| Stock-based compensation | | 9.6 | 10.4 | 9.9 | 9.0 | 8.2 | 6.5 | 5.7 |
| Deferred taxes | | 0.5 | 0.1 | 0.1 | -0.2 | 0.9 | 1.8 | 1.7 |
| Change in working capital [+] | | -45.2 | -30.8 | -20.2 | -12.7 | 22.9 | 14.1 | 7.3 |
| Accounts receivable | | -5.2 | -1.9 | -7.4 | -8.0 | -3.7 | -1.5 | 3.6 |
| Inventories | | -8.9 | -12.7 | -3.7 | 2.6 | 5.9 | 6.3 | -1.7 |
| Other current assets | | -0.4 | 1.5 | 0.9 | 0.5 | 1.1 | -0.3 | -1.0 |
| Other | | -30.7 | -17.7 | -10.0 | -7.7 | 19.7 | 9.7 | 6.3 |
| Other operating activities | | 15.5 | 16.1 | 16.1 | 19.4 | -8.8 | -10.3 | |
| Cash from operations | | -47.2 | -35.4 | -23.3 | -15.0 | -9.2 | -13.9 | -16.6 |
| |
| Capital expenditures [+] | | -10.9 | -10.3 | -7.5 | -5.8 | -4.6 | -4.4 | -4.7 |
| Purchases of property and equipment | | -10.9 | -10.3 | -7.5 | -5.8 | -4.6 | -4.4 | -4.7 |
| Sales of property and equipment | | | | 0.0 | | 0.0 | | |
| Acquisitions | | | | | | | -0.1 | |
| Other cash from investing | | | | 0.2 | | | 1.5 | |
| Cash from investing | | -12.2 | -11.6 | -7.4 | -4.4 | -3.2 | -3.0 | 15.9 |
| |
| Issuance of common stock, net | | 23.0 | | | | | | |
| Option exercises | | | 0.4 | | 0.3 | 0.4 | 0.4 | |
| Other cash from financing | | 6.3 | 48.7 | 48.6 | 43.6 | 38.1 | 0.8 | 0.9 |
| Cash from financing | | 29.0 | 48.3 | 48.3 | 43.3 | 37.7 | 0.4 | 0.5 |
| |
| Free cash flow | | -58.1 | -45.7 | -30.8 | -20.8 | -13.7 | -18.3 | -21.3 |
| Per share (diluted) | | ($1.51) | ($1.23) | ($0.85) | ($0.59) | ($0.40) | ($0.56) | ($0.66) |
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