Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Other Comprehensive Income (Loss) - Changes in Other Comprehensive Income (Loss) (Details)

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Note 6 - Other Comprehensive Income (Loss) - Changes in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Balance at December 31, 2022 $ 293,881 $ 147,582 $ 114,474 $ 147,582 $ 103,824
Other comprehensive income 499   (725) 1,665 (725)
Balance at March 31, 2023 305,399 293,881 123,429 305,399 123,429
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]          
Balance at December 31, 2022 (1,083) (1,224)   (1,224)  
Other comprehensive income 197 141      
Balance at March 31, 2023 (886) (1,083)   (886)  
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]          
Balance at December 31, 2022 350 (674)   (674)  
Other comprehensive income 302 1,024      
Balance at March 31, 2023 652 350   652  
AOCI Attributable to Parent [Member]          
Balance at December 31, 2022 (733) (1,898) 0 (1,898) 0
Other comprehensive income 499 1,165      
Balance at March 31, 2023 $ (234) $ (733) $ (725) $ (234) $ (725)