RIGHT-OF-USE ASSETS AND LEASE LIABILITIES - Narrative (Details) - CAD ($) $ in Thousands	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Cost of sales
Disclosure of quantitative information about right-of-use assets [line items]
Expense relating to leases of low-value assets for which recognition exemption has been used	$ 4,077	$ 4,450
Selling, general and administrative expense
Disclosure of quantitative information about right-of-use assets [line items]
Expense relating to leases of low-value assets for which recognition exemption has been used	$ 2,409	$ 1,729

The amount of the expense relating to leases of low-value assets accounted for applying paragraph 6 of IFRS 16. This expense shall not include the expense relating to short-term leases of low-value assets.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 16
-IssueDate 2024-01-01
-Paragraph 53
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_d&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_ExpenseRelatingToLeasesOfLowvalueAssetsForWhichRecognitionExemptionHasBeenUsed
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration