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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Bonus royalties (Details) - $ / T	6 Months Ended	12 Months Ended
	Jul. 31, 2025	Jan. 31, 2025	Jan. 31, 2024
Disaggregation of Revenue
Bonus royalty, gross proceeds percentage	1.00%
Royalty bonuses, price above adjusted threshold price per ton	2
Adjusted threshold price (in dollars per ton)		69.41	67.75
Minimum
Disaggregation of Revenue
Bonus royalty percentage	0.50%
Royalty bonuses, adjusted threshold price	10
Maximum
Disaggregation of Revenue
Bonus royalty percentage	3.00%

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- Definition

Percentage of gross proceeds for royalty bonus on all tonnage shipped for sale at prices between the adjusted threshold price.

+ References

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Percentage of royalty bonus of the gross proceeds of product shipped on all tonnage shipped for sale at prices between the adjusted threshold price.

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Represents the adjusted threshold price per ton as per the collaborative agreement.

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Adjustments to the per-ton threshold price on gross revenues for royalties.

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Price per tons for bonus royalty above adjusted threshold price.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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