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Stock-Based Compensation Plans - Summary of CRSU Plan Activity (Details) - shares
 12 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2022
Stock-Based Compensation Plans      
Number of Units Outstanding, CRSU (in shares),Beginning 14,583 24,428  
Weighted-Average Remaining Contractual Life, CRSU (years) 1 year 9 months 18 days 1 year 4 months 24 days 1 year 4 months 24 days
Number of Units Granted, CRSU (in shares) 7,879 7,948  
Number of Units Vested and settled in cash, CRSU (in shares) (11,092) (17,719)  
Number of Units Forfeited, CRSU (in shares)   (74)  
Number of Units Outstanding, CRSU (in shares), Ending 11,370 14,583 24,428
Non-vested, CRSU (in shares) 11,370    
Non-vested, Weighted-Average Remaining Contractual Life, CRSU (years) 1 year 9 months 18 days