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Stock-Based Compensation Plans - Summary of CRSU Plan Activity (Details) - shares
 6 Months Ended 12 Months Ended
Jul. 31, 2025
Jan. 31, 2025
Stock-Based Compensation Plans    
Number of Units Outstanding, CRSU (in shares),Beginning 12,017  
Weighted-Average Remaining Contractual Life, CRSU (years) 2 years 1 month 6 days 1 year 8 months 12 days
Number of Units Granted, CRSU (in shares) 9,050  
Number of Units Vested and settled in cash, CRSU (in shares) (3,735)  
Number of Units Forfeited, CRSU (in shares) (148)  
Number of Units Outstanding, CRSU (in shares), Ending 17,184 12,017
Non-vested, CRSU (in shares) 17,184  
Non-vested, Weighted-Average Remaining Contractual Life, CRSU (years) 2 years 1 month 6 days