Annual report pursuant to Section 13 and 15(d)

Note 3 - Investments - Available-for-sale Investments (Details)

v3.24.3
Note 3 - Investments - Available-for-sale Investments (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Sep. 30, 2023
Sep. 09, 2022
Fair value $ 139,330 $ 136,629  
Short-term US Treasury Securities [Member]      
Amortized cost 113,987 122,534  
Unrealized gains 382 0  
Unrealized losses (45) (143)  
Fair value 114,324 122,391  
Short-term Certificates of Deposit [Member]      
Amortized cost 500 8,014  
Unrealized gains 1 0  
Unrealized losses 0 (119)  
Fair value 501   $ 7,895
Short-term Investment [Member]      
Amortized cost 114,487 130,548  
Unrealized gains 384 0  
Unrealized losses (45) (262)  
Fair value 114,825   130,286
US Treasury Securities [Member]      
Amortized cost   6,719  
Unrealized gains   0  
Unrealized losses   (596)  
Fair value     6,123
Long-term Certificates of Deposit [Member]      
Amortized cost 248 248  
Unrealized gains 0 0  
Unrealized losses (12) (28)  
Fair value 236   220
Long-term Investment [Member]      
Amortized cost 24,762 6,967  
Unrealized gains 0 0  
Unrealized losses (257) $ (624)  
Fair value 24,505   $ 6,343
Long-term US Treasury Securities [Member]      
Amortized cost 24,514    
Unrealized gains 0    
Unrealized losses (245)    
Fair value $ 24,269