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Note 13 - Derivatives (Tables)
3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
 
 
 
 
March 31, 2020
 
 
 
 
Notional Amount
 
Fair Value (a)
Derivatives instruments
 
Balance sheet classification
 
 
(in thousands)
 
 
 
 
 
Interest rate swaps
 
Other long term liabilities
 
$
27,289
 
 
$
(747
)
        December 31, 2019
        Notional Amount   Fair Value (a)
Derivatives instruments  
Balance sheet classification
   
(in thousands)
     
 
 
Interest rate swaps  
Other long term liabilities
  $
28,821
    $
(603
)
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Derivatives in Hedging Relationships   Amount of gain (loss) recognized in OCI on derivative
(effective portion)
    Three Months Ended March 31,
    2020   2019
    (in thousands)
Interest rate swaps   $
(216
)   $
(196
)
Details about AOCI Components   Amount reclassified from AOCI into income
(effective portion)
   
    Three Months Ended March 31,   Location of amount reclassified from AOCI
    2020   2019   into income (effective portion)
    (in thousands)    
Interest rate swaps   $
72
    $
17
   
 Interest expense