| In millions, except per share items | Jun-30-23 | Mar-31-23 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 | Mar-31-21 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q |
| OPERATING EXPENSES: | | | | | | | | |
| Research and development | 0.3 | 0.9 | 1.9 | 1.5 | 1.4 | | 1.0 | 1.2 |
| General and administrative | 1.5 | 2.0 | 1.9 | 1.8 | 2.9 | | 1.3 | 2.0 |
| TOTAL OPERATING EXPENSES | 1.8 | 2.9 | 3.8 | 3.3 | 4.2 | | 2.3 | 3.2 |
| |
| OTHER INCOME (EXPENSE): | | | | | | | | |
| Interest income | 0.4 | 0.4 | 0.0 | 0.0 | 0.0 | | 0.0 | 0.0 |
| Change in fair value of warrant liability | -0.2 | 0.6 | | | | | | |
| Change in fair value of derivative liability | -2.5 | 0.2 | | | | | | |
| TOTAL OTHER INCOME (EXPENSE) | -2.3 | 1.2 | 0.0 | 0.0 | | | | 0.0 |
| Net loss before income taxes | 4.1 | 1.7 | 3.8 | 3.3 | 4.2 | | 2.3 | 3.2 |
| Net loss | 4.1 | 1.7 | 3.8 | 3.3 | -21.0 | | | |
| Preferred Stock dividends | 0.4 | 0.3 | | | | | | |
| Deemed dividend - preferred stock extinguishment | 5.7 | | | | | | | |
| Net loss attributable to common stockholders | 10.2 | 2.0 | 3.8 | 3.3 | | | 2.3 | 3.2 |
| |
| PER SHARE DATA: | | | | | | | | |
| Basic loss per common share | $1.39 | $0.26 | $0.54 | $0.47 | $0.62 | | $0.58 | $1.06 |
| Diluted loss per common share | $1.39 | $0.26 | $0.54 | $0.47 | $0.62 | | $0.58 | $1.06 |
| |
| Basic weighted average common shares outstanding | 7.4 | 7.5 | 7.0 | 6.9 | 5.0 | | 4.0 | 3.0 |
| Diluted weighted average common shares outstanding | 7.4 | 7.5 | 7.0 | 6.9 | 5.0 | | 4.0 | 3.0 |