| In millions, except per share items | Dec-31-19 | Dec-31-18 | Dec-05-18 | Dec-31-17 | Dec-05-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 |
| | 10-K | 10-K | 8-K | 10-K | 8-K | 10-K | 10-K | 10-K |
| Net income | -25.1 | -36.3 | -36.3 | -15.2 | -15.2 | -12.0 | 6.7 | 5.3 |
| Depreciation and amortization [+] | 6.7 | 5.7 | | 4.6 | | 3.8 | 1.1 | 0.5 |
| Depreciation | 3.7 | 2.6 | | 1.7 | | 0.9 | 0.6 | 0.4 |
| Amortization of intangible assets | 3.0 | 3.1 | | 2.9 | | 2.8 | 0.5 | 0.1 |
| Asset impairment charges | -0.5 | 3.3 | | 2.2 | | 1.4 | | |
| Stock-based compensation | 1.1 | 2.0 | | 3.3 | | 3.0 | 2.3 | 0.8 |
| Deferred taxes | 0.0 | 0.1 | | | | | | |
| Change in working capital [+] | -4.3 | -2.5 | | 1.6 | | -6.1 | -7.0 | -10.0 |
| Accounts receivable | -3.7 | -4.0 | | 6.0 | | -7.9 | 1.3 | -9.4 |
| Inventories | -6.1 | -1.9 | | -5.3 | | -5.0 | -3.6 | -0.1 |
| Other current assets | 0.8 | 0.2 | | -0.7 | | 3.4 | -5.4 | -1.1 |
| Deferred revenues | | | | | | | 0.4 | -0.7 |
| Other | 4.7 | 3.2 | | 1.6 | | 3.4 | 0.4 | 1.3 |
| Other operating activities | 3.7 | 14.5 | | 3.8 | | 9.5 | -18.6 | -0.5 |
| Cash from operations | -18.4 | -13.3 | | 0.4 | | -0.4 | -15.5 | -3.9 |
| |
| Capital expenditures [+] | -8.2 | -25.3 | | -40.4 | | -16.7 | -6.0 | -0.8 |
| Purchases of property and equipment | -8.2 | -25.3 | | -40.4 | | -16.7 | -6.0 | -0.8 |
| Sales of property and equipment | | 0.0 | | | | | | |
| Purchases of intangible assets | | | | | | -3.4 | -11.7 | -3.0 |
| Other cash from investing | | | | | | | -35.4 | |
| Cash from investing | -8.2 | -25.3 | | -40.4 | | -20.1 | -53.1 | -3.8 |
| |
| Option exercises | | 0.3 | | 0.3 | | 0.1 | 0.2 | 0.8 |
| Financing costs | -3.1 | -6.2 | | | | | | |
| Other cash from financing | 27.3 | 19.3 | | 0.5 | | 0.1 | -2.9 | 165.3 |
| Cash from financing | 30.4 | 25.3 | | 0.3 | | 0.0 | -3.1 | 164.5 |
| |
| Free cash flow | -26.6 | -38.6 | | -40.0 | | -17.1 | -21.5 | -4.7 |
| Per share (diluted) | ($0.49) | ($0.72) | | ($0.75) | | ($0.32) | ($0.32) | ($0.07) |
| |
| Cash paid for interest | 5.6 | 7.3 | | 5.4 | | 5.4 | 5.5 | 0.2 |
| Cash paid for income taxes | 0.2 | 0.1 | | 0.1 | | 0.1 | 0.1 | 0.0 |