Quarterly report [Sections 13 or 15(d)]

Note 7 - Marketable Debt Securities - Schedule of Fair Value Measurement (Details)

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Note 7 - Marketable Debt Securities - Schedule of Fair Value Measurement (Details) - USD ($)
$ in Thousands
Aug. 31, 2026
Nov. 30, 2025
Fair value $ 1,001 $ 1,754
US Treasury Securities [Member]    
Fair value 1,001 1,006
Reported Value Measurement [Member]    
Cash equivalents 3,309 5,043
Total 4,308 6,779
Reported Value Measurement [Member] | US Treasury Securities [Member]    
Fair value 999 999
Estimate of Fair Value Measurement [Member]    
Cash equivalents 3,309 5,043
Total 4,310 6,797
Estimate of Fair Value Measurement [Member] | US Treasury Securities [Member]    
Fair value 1,001 1,006
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member]    
Cash equivalents 3,309 5,043
Total 3,309 5,043
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]    
Fair value 0 0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]    
Cash equivalents 0 0
Total 1,001 1,754
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]    
Fair value 1,001 1,006
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member]    
Cash equivalents 0 0
Total 0 0
Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member]    
Fair value $ 0 $ 0