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Note 12 - Employee Benefit Plans (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
   

Three Months Ended June 30,

   

Six Months Ended June 30,

   
   

2020

   

2019

   

2020

   

2019

  Income Statement Location

(Amounts in thousands)

                                 

Service cost

  $ 78     $ 80     $ 155     $ 160  

Salaries and employee benefits

Interest cost

    89       101       178       202  

Other expense

Amortization of prior service cost

    50       64       100       128  

Other expense

Amortization of losses

    47       6       93       11  

Other expense

Net periodic cost

  $ 264     $ 251     $ 526     $ 501