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Note 6 - Accumulated Other Comprehensive Income (Loss) (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
  

Unrealized (losses)/gains

on available-for-sale

securities (a)

 

(Dollars in thousands)

    

Balance as of December 31, 2022

 $(22,144)

Other comprehensive income

  2,891 

Balance at March 31, 2023

 $(19,253)
     

Balance as of December 31, 2021

 $3,462 

Other comprehensive loss

  (10,136)

Balance at March 31, 2022

 $(6,674)