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INCOME TAX (Details) - Schedule of Temporary Differences and Unused Tax Losses - USD ($) $ in Thousands | Mar. 31, 2022 | Mar. 31, 2021
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INCOME TAX (Details) - Schedule of Temporary Differences and Unused Tax Losses [Line Items] |  |
Deferred tax asset | $ 94,766 | $ 97,218
Non-capital loss carry forward [Member] |  |
INCOME TAX (Details) - Schedule of Temporary Differences and Unused Tax Losses [Line Items] |  |
Deferred tax asset | 69,341 | 62,764
Plant and equipment [Member] |  |
INCOME TAX (Details) - Schedule of Temporary Differences and Unused Tax Losses [Line Items] |  |
Deferred tax asset | 2,331 | 10,813
Mineral rights and properties [Member] |  |
INCOME TAX (Details) - Schedule of Temporary Differences and Unused Tax Losses [Line Items] |  |
Deferred tax asset | 2,006 | 1,972
Other deductible temporary difference [Member] |  |
INCOME TAX (Details) - Schedule of Temporary Differences and Unused Tax Losses [Line Items] |  |
Deferred tax asset | $ 21,088 | $ 21,669

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