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Note 16 - Other Comprehensive Income (Loss) (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Comprehensive Income (Loss) [Table Text Block]
   

2023

 
   

Before tax

   

Tax effect

   

Net of tax

 
   

(In thousands)

 

Debt securities available for sale:

                       

Changes in net unrealized losses arising during the year

  $ 93,326     $ (27,591 )   $ 65,735  

Reclassification of losses included in net income

    125       (37 )     88  

Other comprehensive income

  $ 93,451     $ (27,628 )   $ 65,823  
   

2022

 
   

Before tax

   

Tax effect

   

Net of tax

 
   

(In thousands)

 

Debt securities available for sale:

                       

Changes in net unrealized losses/gains arising during the year

  $ (434,107 )   $ 128,338     $ (305,769 )

Other comprehensive loss

  $ (434,107 )   $ 128,338     $ (305,769 )
   

2021

 
   

Before tax

   

Tax effect

   

Net of tax

 
   

(In thousands)

 

Debt securities available for sale:

                       

Changes in net unrealized gains arising during the year

  $ (91,891 )   $ 27,167     $ (64,724 )

Reclassification of gains included in net income

    (34 )     10       (24 )

Other comprehensive loss

  $ (91,925 )   $ 27,177     $ (64,748 )
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
   

Accumulated Other Comprehensive Income (Loss)

 
   

(In thousands)

 

Balance, December 31, 2020

  $ 114,412  

Changes in unrealized gains on debt securities available for sale, net of tax

    (64,748 )

Balance, December 31, 2021

    49,664  

Changes in unrealized losses/gains on debt securities available for sale, net of tax

    (305,769 )

Balance, December 31, 2022

    (256,105 )

Changes in unrealized losses on debt securities available for sale, net of tax

    65,823  

Balance, December 31, 2023

  $ (190,282 )