Segmented Information and Economic Dependence - Summary of Revenues Allocated According to Revenue Types (Details) - CAD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2024	Jan. 31, 2023
Disclosure Of Geographical Areas [Line Items]
Revenues	$ 6,221	$ 5,171	$ 18,059	$ 15,044
Project Revenue
Disclosure Of Geographical Areas [Line Items]
Revenues	5,774	4,754	16,508	13,817
Product Sales Revenue
Disclosure Of Geographical Areas [Line Items]
Revenues	395	363	1,372	1,054
Cryo Storage Revenue
Disclosure Of Geographical Areas [Line Items]
Revenues	$ 52	$ 54	$ 179	$ 173

The income arising in the course of an entity's ordinary activities. Income is increases in assets, or decreases in liabilities, that result in increases in equity, other than those relating to contributions from holders of equity claims.

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+ Details