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Note 11 - Accumulated Other Comprehensive Income (Loss) (Tables)
3 Months Ended
Mar. 31, 2022
Notes Tables  
Comprehensive Income (Loss) [Table Text Block]
   

Three Months Ended

 
   

March 31,

 

(in thousands)

 

2022

   

2021

 
                 

Balance at beginning of period

  $ (16,817 )   $ (3,420 )

Foreign currency translation adjustments

               

Other comprehensive income (loss) before reclassifications

    (4,972 )     (6,842 )

Amounts reclassified from accumulated other comprehensive loss

    -       -  

Net current-period other comprehensive income (loss)

    (4,972 )     (6,842 )

Net unrealized gains (losses) on investments in securities

               

Other comprehensive income (loss) before reclassifications

    (516 )     166  

Amounts reclassified from accumulated other comprehensive loss

    -       -  

Net current-period other comprehensive income (loss)

    (516 )     166  

Balance at end of period

  $ (22,305 )   $ (10,096 )