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Note 13 - Fair Value Measurement (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
New Credit Facility
 
   
Carrying Value
   
Fair Value
 
                 
Notes payable December 31, 2018
  $
74,562
    $
74,702
 
                 
Notes payable December 31, 2019
  $
70,212
    $
69,932