Supplemental cash flow information (Schedule of Non-Cash Investing and Financing Activities) (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Non-Cash Investing and Financing Activities | |||
| Acquisition of CHI | $ 700,000 | ||
| Convertible debt settlement | 668,610 | ||
| Conversion of accounts payable into long-term promissory notes | 100,000 | ||
| Common shares issued in settlement of accrued and unpaid salaries | 12,250 | 116,000 | |
| Reallocation of conversion rights reserve on settlement of convertible debt | 92,966 | ||
| Reallocation of share-based payment and other reserve on warrant exercise | $ 26,200 | ||