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Accumulated Other Comprehensive Loss (Tables)
 3 Months Ended
Mar. 31, 2019
Equity [Abstract]  
Schedule of changes in accumulated other comprehensive income (loss), net of tax
The following table summarizes the changes in the accumulated balances of other comprehensive loss during the three months ended March 31, 2019 and 2018 (in thousands):
 
Three Months Ended March 31,
 
2019
 
2018
Beginning balance
$
(3,985
)
 
$
(3,908
)
Holding gains (losses) arising during period, net of tax
609

 
(454
)
Ending balance
$
(3,376
)
 
$
(4,362
)