Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Investments - Available-for-sale Investments (Details)

v3.23.2
Note 4 - Investments - Available-for-sale Investments (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Sep. 30, 2022
Sep. 09, 2022
Fair value $ 137,282 $ 28,549  
Short-term Certificates of Deposit [Member]      
Amortixed cost 9,750 5,945  
Unrealized gains 0 0  
Unrealized losses 204 143  
Fair value 9,546   $ 5,802
Short-term US Treasury Securities [Member]      
Amortixed cost 121,458    
Unrealized gains 0    
Unrealized losses 278    
Fair value 121,180    
Short-term Investment [Member]      
Amortixed cost 131,208 5,945  
Unrealized gains 0 0  
Unrealized losses 482 143  
Fair value 130,726   5,802
US Treasury Securities [Member]      
Amortixed cost   16,178  
Unrealized gains   0  
Unrealized losses   1,085  
Fair value     15,093
Long-term Certificates of Deposit [Member]      
Amortixed cost 495 8,016  
Unrealized gains 0 0  
Unrealized losses 40 362  
Fair value 455   7,654
Long-term Investment [Member]      
Amortixed cost 7,206 24,194  
Unrealized gains 0 0  
Unrealized losses 650 $ 1,447  
Fair value 6,556   $ 22,747
Long-term US Treasury Securities [Member]      
Amortixed cost 6,711    
Unrealized gains 0    
Unrealized losses 610    
Fair value $ 6,101