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Shareholders' Equity
 3 Months Ended
Mar. 31, 2021
Shareholders' Equity [Abstract]  
Shareholders' Equity
(11)  Shareholders' Equity:

On August 31, 2017, the Company's Board of Directors authorized the reinstatement of its share repurchase program for up to 2,464,209 shares of the Company's Class A or Class B Common Stock.  No duration has been placed on the Company's share repurchase program, and the Company reserves the right to amend, suspend or discontinue it at any time.  The share repurchase program does not commit the Company to repurchase any shares of its common stock.

During the three months ended March 31, 2021, the Company did not repurchase any shares under the share repurchase program.  No share repurchases have been made since March 20, 2020.

The following table illustrates changes in accumulated other comprehensive income (loss) by component for the three months ended March 31, 2021:

  
Foreign
Currency
    
Unrealized Holding Gains (Losses) on
Available-for-sale Securities
    
Total
  
Beginning balance at December 31, 2020
  
$
(245
)
  
$
22,004
    
$
21,759
  
                         
Other comprehensive income (loss) before reclassifications
    
88
      
(8,580
)
    
(8,492
)
Amounts reclassified from accumulated other comprehensive income (loss)
    
–
      
(501
)
    
(501
)
                         
Net current-period other comprehensive income (loss)
    
88
      
(9,081
)
    
(8,993
)
                         
Ending balance at March 31, 2021
  
$
(157
)
  
$
12,923
    
$
12,766
  

The following table illustrates changes in accumulated other comprehensive income (loss) by component for the three months ended March 31, 2020:

  
Foreign
Currency
    
Unrealized Holding Gains (Losses) on
Available-for-sale Securities
    
Total
  
Beginning balance at December 31, 2019
  
$
(494
)
  
$
9,863
    
$
9,369
  
                         
Other comprehensive income (loss) before reclassifications
    
(687
)
    
(20,256
)
    
(20,943
)
Amounts reclassified from accumulated other comprehensive income (loss)
    
–
      
(605
)
    
(605
)
                         
Net current-period other comprehensive income (loss)
    
(687
)
    
(20,861
)
    
(21,548
)
                         
Ending balance at March 31, 2020
  
$
(1,181
)
  
$
(10,998
)
  
$
(12,179
)