| In millions, except per share items | Jun-30-23 | Mar-31-23 | Dec-31-22 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 |
| | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q |
| Net income | -4.3 | -2.2 | -3.8 | -2.4 | -2.7 | -3.3 | -2.8 | -3.4 |
| Depreciation and amortization | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Stock-based compensation | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.5 | 0.6 | 0.7 |
| Change in working capital [+] | 2.2 | 0.1 | 3.3 | 0.2 | -1.2 | 0.1 | 3.3 | -0.6 |
| Other current assets | 0.1 | 0.2 | 0.2 | 0.4 | -0.7 | 0.2 | 0.3 | 0.2 |
| Accounts payable | 0.8 | 0.4 | -0.1 | -0.1 | -0.3 | 0.3 | -0.9 | -0.6 |
| Accrued expenses | 0.4 | -0.3 | 0.2 | 0.0 | -0.1 | -0.1 | 0.0 | 0.0 |
| Other | 0.8 | -0.2 | 2.9 | -0.2 | -0.1 | -0.3 | 3.9 | -0.2 |
| Other operating activities | 0.0 | 0.1 | -18.0 | 3.6 | 0.0 | 0.2 | -3.8 | 0.0 |
| Cash from operations | -1.8 | -1.6 | -18.1 | 1.8 | -3.4 | -2.5 | -2.7 | -3.3 |
| |
| Capital expenditures [+] | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Purchases of property and equipment | | | | | | | 0.0 | |
| Sales of property and equipment | | 0.0 | | | | | | |
| Purchases of intangible assets | | | | | | | | 0.0 |
| Other cash from investing | 2.6 | 1.1 | 4.4 | 3.1 | 4.7 | -0.7 | -15.4 | 6.4 |
| Cash from investing | 2.6 | 1.1 | 4.4 | 3.1 | 4.7 | -0.7 | -15.4 | 6.4 |
| |
| Issuance of common stock, net | | | | | | | 15.0 | |
| Option exercises | | | | 0.0 | | | 0.1 | 0.2 |
| Other cash from financing | | | 0.0 | 0.1 | | -0.2 | -0.9 | 4.6 |
| Cash from financing | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | -0.2 | 13.9 | 4.5 |
| |
| Free cash flow | -1.8 | -1.6 | -18.1 | 1.8 | -3.4 | -2.5 | -2.7 | -3.3 |
| Per share (diluted) | ($0.62) | ($0.56) | ($6.26) | $0.62 | ($1.18) | ($0.87) | ($1.22) | ($1.53) |
| |
| Cash paid for interest | | | | | | 0.1 | | |
| Cash paid for income taxes | 0.0 | | | | 0.0 | | | |