| In millions, except per share items | Sep-30-18 | Jun-30-18 | Mar-31-18 | Dec-31-17 | Sep-30-17 | Jun-30-17 | Mar-31-17 | Dec-31-16 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | -5.1 | -4.0 | -2.5 | -5.3 | -11.7 | -24.0 | -23.8 | -23.5 |
| Depreciation and amortization | 0.4 | 0.4 | 0.5 | 0.6 | 0.6 | 0.7 | 0.8 | 0.8 |
| Stock-based compensation | 0.5 | 0.5 | 0.4 | 0.4 | 1.1 | 1.2 | 1.3 | 1.6 |
| Deferred taxes | | 0.6 | | | | | | |
| Change in working capital [+] | 0.9 | 0.6 | -0.4 | -0.9 | -12.0 | -10.3 | -11.6 | -9.2 |
| Accounts receivable | 2.1 | 1.6 | 1.3 | 2.6 | 1.5 | -0.3 | 0.5 | -1.1 |
| Inventories | 0.8 | 1.7 | 2.9 | 2.8 | 3.6 | 2.3 | 0.7 | 1.0 |
| Other current assets | 0.9 | 0.9 | 0.3 | 0.5 | 0.4 | 3.8 | 0.5 | 0.6 |
| Income taxes | -0.3 | -0.3 | -0.4 | -0.3 | -11.4 | -11.6 | -11.5 | -11.5 |
| Other | -2.7 | -3.3 | -4.5 | -6.5 | -6.1 | -4.5 | -1.7 | 1.9 |
| Other operating activities | 0.2 | -2.6 | -1.9 | -1.2 | 13.4 | 27.1 | 24.9 | 23.3 |
| Cash from operations | -2.5 | -4.5 | -3.8 | -6.3 | -8.6 | -5.2 | -8.3 | -7.0 |
| |
| Capital expenditures [+] | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.1 | 0.0 | -0.1 |
| Purchases of property and equipment | | | 0.0 | 0.0 | | | | -0.1 |
| Sales of property and equipment | | | 0.0 | | | | | 0.1 |
| Other cash from investing | | | | | 3.3 | | | |
| Cash from investing | 0.0 | 3.3 | 3.3 | 3.3 | 3.3 | -0.1 | 0.0 | -0.1 |
| |
| Issuance of common stock, net | 2.1 | | | | | | | 10.2 |
| Option exercises | | | | | 0.0 | 0.0 | | |
| Other cash from financing | | | | | -5.1 | -4.0 | -0.9 | 1.9 |
| Cash from financing | 2.1 | -0.5 | -1.1 | -3.3 | 5.0 | 6.1 | 9.3 | 12.1 |
| |
| Free cash flow | -2.5 | -4.5 | -3.9 | -6.3 | -8.7 | -5.2 | -8.4 | -7.2 |
| Per share (diluted) | ($0.20) | ($0.36) | ($0.45) | ($0.73) | ($1.39) | ($0.76) | ($1.06) | ($1.47) |
| |