v3.26.1
Note 3 - Marketable Securities - Summary of Available-for-sale Securities (Details) - USD ($)
$ in Thousands
May 31, 2026
Mar. 01, 2026
Available-for-sale securities $ 8,926 $ 10,874
Fair Value, Inputs, Level 1 [Member]    
Available-for-sale securities 8,926 10,874
Fair Value, Inputs, Level 2 [Member]    
Available-for-sale securities 0 0
Fair Value, Inputs, Level 3 [Member]    
Available-for-sale securities 0 0
US Treasury and Government [Member]    
Available-for-sale securities 8,926 10,874
US Treasury and Government [Member] | Fair Value, Inputs, Level 1 [Member]    
Available-for-sale securities 8,926 10,874
US Treasury and Government [Member] | Fair Value, Inputs, Level 2 [Member]    
Available-for-sale securities 0 0
US Treasury and Government [Member] | Fair Value, Inputs, Level 3 [Member]    
Available-for-sale securities $ 0 $ 0