| In millions, except per share items | Sep-30-22 | Sep-30-21 | Jun-30-21 | Dec-31-20 | Sep-30-20 | Jun-30-20 | Mar-31-20 | Dec-31-19 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Net income | | | | -2.4 | -2.4 | -2.1 | -2.4 | -2.6 |
| Depreciation and amortization [+] | | | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Depreciation | | | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Stock-based compensation | | | | | 0.0 | | | |
| Change in working capital | | | | 0.1 | 1.0 | 0.7 | 0.8 | 0.8 |
| Other | | | | 0.1 | 1.0 | 0.7 | 0.8 | 0.8 |
| Other operating activities | | | | -0.1 | -0.6 | -0.6 | -0.7 | -0.8 |
| Cash from operations | | | | -2.4 | -1.9 | -2.0 | -2.3 | -2.7 |
| |
| Capital expenditures [+] | | | | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Purchases of property and equipment | | | | | | | | 0.0 |
| Sales of property and equipment | | | | | | | | 0.1 |
| Sales of short-term investments | | | | 0.7 | 0.8 | 1.2 | | 1.4 |
| Sales of short-term investments | | | | 0.7 | 0.8 | 1.2 | | 1.4 |
| Other cash from investing | | | | -0.7 | -0.8 | -1.2 | | -1.2 |
| Cash from investing | | | | 0.1 | 0.0 | 0.0 | 0.2 | 0.2 |
| |
| Issuance of common stock, net | | | | 5.6 | | 2.8 | | |
| Other cash from financing | | | | -2.4 | | | 0.4 | |
| Cash from financing | | | | 3.2 | 3.2 | 3.2 | 0.4 | 0.0 |
| |
| Free cash flow | | | | -2.4 | -2.0 | -2.0 | -2.3 | -2.7 |
| Per share (diluted) | | | | ($0.19) | ($0.16) | ($0.17) | ($0.20) | ($0.24) |
| |