Note 21 - Subsequent Events	12 Months Ended
Mar. 31, 2022
Notes To Financial Statements [Abstract]
Subsequent Events	21. Subsequent events Functional currency On April 1, 2022, the Corporation’s functional currency was changed from the Canadian dollar to the US dollar. This change will be reflected prospectively in the Corporation’s financial statements beginning with the first quarter of fiscal 2023. Common shares Subsequent to March 31, 2022, the Corporation sold an additional 151,575 common shares for net proceeds of approximately $146 (gross proceeds of $151) under the ATM program.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

Name:	us-gaap_SubsequentEventsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration