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Note 11 - Income Taxes - Components of Tax Expenses (Details) - CAD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Statement Line Items [Line Items]        
Current income tax expense $ 493 $ 3,051 $ 1,366 $ 3,513
Deferred income tax expense (recovery) 180 (998) (59) (3,754)
Provision for (recovery of) income taxes $ 673 $ 2,053 $ 1,307 $ (241)