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Accumulated Other Comprehensive Loss (Tables)
 9 Months Ended
Sep. 30, 2019
Equity [Abstract]  
Schedule of changes in accumulated other comprehensive loss

The following table summarizes the changes in the accumulated balances of other comprehensive loss during the three and nine months ended September 30, 2019 and 2018 (in thousands):
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2019
 
2018
 
2019
 
2018
Beginning balance
$
(3,032
)
 
$
(4,295
)
 
$
(3,985
)
 
$
(3,908
)
Holding (losses) gains associated with marketable securities arising during period, net of tax
(167
)
 
134

 
786

 
(253
)
Ending balance
$
(3,199
)
 
$
(4,161
)
 
$
(3,199
)
 
$
(4,161
)