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Income Taxes - Schedule of effective income tax expense (recovery) (Details) - USD ($)
 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Major components of tax expense (income) [Abstract]    
Income (loss) for the year from continuing operations before $ 42,691,050 $ (832,081)
Expected income tax (recovery) 11,527,336 (224,258)
Change in statutory, foreign tax, foreign exchange rates and other (13,449,000) (1,342,000)
Permanent differences 4,799,000 260,000
Impact on sale of subsidiary 3,924,000 0
Share issue cost (497,000) 0
Adjustment to prior years provision and other 1,803,000 11,155,000
Change in unrecognized deductible temporary differences (7,956,000) (9,018,000)
Tax recovery (expense) 151,366 830,742
Current income tax 151,336 830,742
Deferred income tax 0 0
Total income tax $ 151,366 $ 830,742