| In millions, except per share items | Apr-30-21 | Apr-30-20 | Apr-30-19 | Apr-30-18 | Apr-30-17 | Apr-30-16 | Apr-30-15 | Apr-30-14 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K/A | 10-K/A | 10-K/A |
| Operating activities: | | | | | | | | |
| Net Income (Loss) | -8.0 | -3.9 | -4.1 | -1.1 | 1.5 | -1.4 | | |
| Adjustments to reconcile net income (loss) to net cash used in operating activities: | | | | | | | | |
| Depreciation and amortization | 0.2 | 0.3 | 0.8 | 0.5 | 0.0 | 0.0 | 0.0 | |
| Common stock issued for services | 4.4 | 0.3 | 0.0 | | | | | |
| Impairment | | | | | | 0.0 | | |
| Changes in operating assets and liabilities: | | | | | | | | |
| Accounts receivable, net | | 0.1 | 0.4 | -1.9 | -0.1 | 0.0 | 0.0 | |
| Other receivable | | 0.4 | -0.1 | -0.1 | | | 0.0 | |
| Total adjustment to reconcile net income to net cash | | 3.6 | 1.1 | -0.9 | 0.9 | 1.4 | 4.7 | |
| Net cash provided In operating activities | -0.1 | -0.3 | -3.1 | -2.0 | 2.4 | 0.0 | -0.2 | 0.0 |
| |
| Investing activities: | | | | | | | | |
| Acquisition of intangible assets | 0.0 | | -0.5 | -0.4 | 0.0 | | 0.0 | |
| Net cash used in investing activities | 0.0 | 0.0 | 0.3 | -0.5 | -1.1 | | 0.0 | 0.0 |
| |
| Financing Activities: | | | | | | | | |
| Net cash used in financing activities | 0.1 | 0.0 | 2.5 | 1.3 | 0.2 | 0.0 | 0.0 | 0.4 |
| Net Change in Cash | 0.0 | -0.3 | -0.2 | -1.1 | 1.6 | 0.0 | -0.5 | 0.4 |
| |
| Cash and Cash Equivalents, at Carrying Value, Beginning Balance | | | | | | | | |
| Cash and Cash Equivalents, at Carrying Value, Ending Balance | | | | | | | | |
| Supplemental Disclosure of Cash Flows Information: | | | | | | | | |
| Cash paid for interest | | | 0.0 | | | | | |
| Non-cash Investing and Financing Activities: | | | | | | | | |
| Joint Venture investment with BRRX Management | | 0.2 | | | | | | |