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Note 14 - Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
  

Three months ended

 
  

March 31,

 
  

2021

  

2020

 
  

(in thousands)

 

Beginning balance

 $2,240  $1,765 

Additions

  -   - 

Payments

  -   - 

Change in fair value included in earnings

  30   28 
         

Ending balance

 $2,270  $1,793