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Note 15 - Accumulated Other Comprehensive Income (Loss) (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Comprehensive Income (Loss) [Table Text Block]
   

Year Ended December 31,

 

(in thousands)

 

2021

   

2020

   

2019

 
                         

Balance at beginning of period

  $ (3,420 )   $ (7,018 )   $ (8,492 )

Foreign currency translation adjustments

                       

Other comprehensive (loss) income before reclassifications

    (13,278 )     3,598       1,474  

Amounts reclassified from accumulated other comprehensive income (loss)

    -       -       -  

Net current-period other comprehensive (loss) income

    (13,278 )     3,598       1,474  

Net unrealized gains (losses) on investments in securities

                       

Other comprehensive (loss) income before reclassifications

    (119 )     -       -  

Amounts reclassified from accumulated other comprehensive income (loss)

    -       -       -  

Net current-period other comprehensive (loss) income

    (119 )     -       -  

Balance at end of period

  $ (16,817 )   $ (3,420 )   $ (7,018 )