| In millions, except per share items | Dec-31-15 | Dec-31-14 | Dec-31-13 | Dec-31-12 | Dec-31-11 | Dec-31-10 | Dec-31-09 | Dec-31-08 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Net income | -12.6 | -7.2 | -3.8 | -3.1 | -7.2 | 0.5 | 2.3 | 3.6 |
| Depreciation and amortization | 1.1 | 0.9 | 0.8 | 0.9 | 0.8 | 0.8 | 0.6 | 0.4 |
| Stock-based compensation | 0.5 | 0.6 | 0.3 | 0.4 | 0.7 | 0.9 | 1.5 | 0.7 |
| Deferred taxes | | | 0.0 | 0.0 | 0.6 | 0.0 | -0.6 | 0.0 |
| Change in working capital [+] | 6.4 | 3.2 | 0.7 | 2.9 | 3.7 | 1.6 | -3.0 | -1.0 |
| Accounts receivable | 0.9 | -1.0 | 0.5 | 1.9 | 1.2 | 1.8 | -1.6 | -2.1 |
| Other current assets | 0.1 | 0.1 | -0.4 | 0.0 | 0.0 | 0.2 | | |
| Accounts payable | 0.0 | 0.9 | -0.3 | | | | | |
| Accrued expenses | 0.0 | 0.8 | | | | | | |
| Other | 5.5 | 2.3 | 1.0 | 1.0 | 2.6 | | | |
| Other operating activities | -1.4 | -1.1 | -2.2 | -1.2 | -1.1 | -0.6 | 1.8 | 2.6 |
| Cash from operations | -6.1 | -3.6 | -4.2 | -0.1 | -2.5 | 3.2 | 2.6 | 6.4 |
| |
| Capital expenditures [+] | -0.5 | -0.8 | -0.3 | -0.5 | -0.7 | -0.7 | -0.7 | -0.3 |
| Purchases of property and equipment | -0.5 | -0.8 | -0.3 | -0.1 | -0.1 | -0.3 | -0.7 | -0.3 |
| Capitalized product costs | | | | -0.4 | -0.6 | -0.4 | | |
| Sales of property and equipment | | 0.1 | | | | | | |
| Acquisitions | -4.3 | -6.9 | | | | | | |
| Other cash from investing | 0.0 | -0.5 | | | | | | |
| Cash from investing | -4.7 | -8.1 | -0.3 | -0.5 | -0.7 | -0.7 | -1.3 | -0.6 |
| |
| Issuance of common stock, net | 7.0 | | | | | | | |
| Option exercises | 0.0 | 2.0 | 0.0 | | | | | |
| Other cash from financing | 5.4 | 8.5 | 0.0 | 0.0 | -0.1 | 0.2 | 0.0 | |
| Cash from financing | 12.4 | 6.5 | 0.0 | 0.0 | -0.1 | 0.2 | 0.0 | 0.6 |
| |
| Free cash flow | -6.5 | -4.4 | -4.5 | -0.2 | -2.5 | 2.9 | 1.9 | 6.1 |
| Per share (diluted) | ($0.87) | ($0.69) | ($0.79) | ($0.11) | ($0.55) | $0.14 | $0.11 | |
| |
| Cash paid for interest | 0.4 | 0.1 | | | | | | |
| Cash paid for income taxes | 0.0 | 0.0 | 0.1 | 0.0 | 0.1 | | | |