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Available-for-sale securities - Summary of Maturities of Available-for-sale Securities (Details) - USD ($)
$ in Thousands
May 01, 2022
Jan. 30, 2022
Fair Value    
Within 1 year $ 11,544  
After 1 year through 5 years 1,586  
Total available-for-sale securities 13,130 $ 12,872
Amortized Cost    
Within 1 year 12,366  
After 1 year through 5 years 2,317  
Total available-for-sale securities $ 14,683 $ 14,401