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Accumulated other comprehensive income (Tables)
12 Months Ended
Mar. 31, 2022
Accumulated other comprehensive income [abstract]  
Schedule of accumulated other comprehensive income
Foreign currency differences on translation of foreign operations
Hedging reserve
Total accumulated other comprehensive income (loss)
202220212022202120222021
$$$$$$
Balance - Beginning of fiscal year9,715 (6,271)— — 9,715 (6,271)
Other comprehensive income (loss)(7,061)15,986 23 — (7,038)15,986 
Balance - End of fiscal year2,654 9,715 23 — 2,677 9,715