v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Others (Details) - shares
3 Months Ended
Apr. 30, 2026
Apr. 30, 2025
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES    
Number of units outstanding 13,120,010 13,120,010
Percentage of fee interest owned by Mesabi Land Trust in the lands subject to the Peters Lease 20.00%