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Note 1 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

(Dollars in thousands)

 

As of December 31,

 
  

2021

  

2020

 

Unrealized gain (loss) on available for sale securities

 $(3,261) $13,959 

Unrecognized gains on post-retirement benefits

      

Tax effect

  685   (2,931)

Accumulated other comprehensive income (loss)

 $(2,576) $11,028