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Note 10 - Accumulated Other Comprehensive Loss (Tables)
6 Months Ended
Jun. 30, 2019
Notes Tables  
Comprehensive Income (Loss) [Table Text Block]
                                 
   

Three Months Ended

   

Six Months Ended

 
   

June 30,

   

June 30,

 

(in thousands)

 

2019

   

2018

   

2019

   

2018

 

Foreign currency translation adjustments

                               

Balance at beginning of period

  $ (8,016 )   $ (2,841 )   $ (8,492 )   $ (5,234 )

Other comprehensive income (loss) before reclassifications

    (478 )     (3,518 )     (2 )     (1,125 )

Amounts reclassified from accumulated other comprehensive loss

    -       -       -       -  

Net current-period other comprehensive income (loss)

    (478 )     (3,518 )     (2 )     (1,125 )

Balance at end of period

  $ (8,494 )   $ (6,359 )   $ (8,494 )   $ (6,359 )