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Shareholders' Equity
 3 Months Ended
Mar. 31, 2020
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.  On August 6, 2019, the Company's Board of Directors reaffirmed its share repurchase program, but also provided that the aggregate dollar amount of shares of the Company's common stock that may be repurchased under the share repurchase program between August 6, 2019 and August 6, 2020 may not exceed $25,000, including a limit of up to $6,250 per quarter.  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, 2020, the Company paid $1,782 to repurchase 126,764 shares of Class B Common Stock under the share repurchase program.

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
)

The following table illustrates changes in accumulated other comprehensive income (loss) by component for the three months ended March 31, 2019:

  
Foreign
Currency
  
Unrealized Holding
Gains (Losses) on
Available-for-sale
Securities
  
Total
 
Beginning balance at December 31, 2018
 
$
(1,139
)
 
$
(6,208
)
 
$
(7,347
)
             
Other comprehensive loss before reclassifications
  
307
   
7,671
   
7,978
 
Amounts reclassified from accumulated other comprehensive income (loss)
  
–
   
785
   
785
 
             
Net current-period other comprehensive income (loss)
  
307
   
8,456
   
8,763
 
             
Ending balance at March 31, 2019
 
$
(832
)
 
$
2,248
  
$
1,416