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SUPPLEMENTAL CASH FLOW INFORMATION (Details) - CAD ($) $ in Thousands | 12 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Supplemental Cash Flow Information [Abstract] |  |
Accounts receivable | $ (240,675) | $ (50,516)
Income tax receivable | (18,238) | 2,181
Contract assets | 201,151 | (178,224)
Inventories | 1,562 | (12,197)
Deposits, prepaids and other assets | (3,017) | 3,063
Accounts payable and accrued liabilities | 42,131 | (69,923)
Income tax payable | (7,085) | 5,126
Contract liabilities | 17,930 | 14,944
Provisions | (7,026) | 4,840
Foreign exchange and other | 5,299 | 5,070
Change in non-cash operating working capital | $ (7,968) | $ (275,636)

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