Note 9 - Government Assistance (Details Textual)	1 Months Ended		12 Months Ended
	Oct. 31, 2020 CAD ($)	Sep. 30, 2019 CAD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)
Award in Non-dilutive and Non-repayable Funding From NRC IRAP	$ 750,000
Proceeds from NRC IRAP			$ 0	$ 79,000
Maximum [Member]
Award in Non-dilutive and Non-repayable Funding From NRC IRAP	$ 326,000	$ 750
Research and Development Expense [Member]
Government Assistance			$ 577,000	$ 127,000