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Strategic Investments - EnWave Corporation (Details) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Apr. 29, 2020 CAD ($) $ / shares shares | Apr. 25, 2019 CAD ($) day $ / shares shares | Jun. 30, 2020 CAD ($) | Jun. 30, 2019 CAD ($) $ / shares shares | Jun. 30, 2020 $ / shares shares
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |  |  |  |
Share price (in CAD per share) | $ / shares |  |  |  |  | $ 12.42
Marketable securities designated at FVTOCI |  |  |  |  |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |  |  |  |
Unrealized loss on changes in fair value |  |  | $ 43,613 | $ 78,837 |
EnWave | Marketable securities designated at FVTOCI |  |  |  |  |
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items] |  |  |  |  |
Number of common shares acquired (in shares) | shares |  | 5,302,227 |  |  |
Proportion of ownership interest in investment |  | 4.90% |  |  |
Number of shares exchanged for purchase of common shares (in shares) | shares |  | 840,576 |  |  |
Shares exchanged for purchase of common shares, at fair value |  | $ 10,000 |  |  |
Shares exchanged for purchase of common shares, at fair value, volume weighted average trading price, period | day |  | 5 |  |  |
Number of shares sold (in shares) | shares | 5,302,227 |  |  |  |
Share price (in CAD per share) | $ / shares | $ 0.80 |  |  |  |
Proceeds from sale of common shares | $ 4,100 |  |  |  |
Quoted stock price (in CAD per share) | $ / shares |  | $ 1.89 |  |  |
Loss on sale of shares |  | $ 5,900 |  |  |
Unrealized loss on changes in fair value |  | $ 8,500 |  |  |
Total shareholdings (in shares) | shares |  |  |  | 5,302,227 | 0
Financial assets, at fair value |  |  |  | $ 12,600 |
Share price (in CAD per share) | $ / shares |  |  |  | $ 2.38 |
Gain recognised in profit or loss attributable to change in unrealised gains or losses for assets held at end of period, fair value measurement |  |  |  | $ 2,600 |

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