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Reserve for Severance (Tables)
 12 Months Ended
Dec. 31, 2017
Severance Reserve [Abstract]  
Changes in the reserve for severance
The table below reflects the activity in the Company’s reserve for severance and related payments.
 
(Dollars in thousands)
 
Year Ended December 31,
 
2017
 
2016
 
2015
Beginning balance
$
1,710

 
$
697

 
$
311

Charged to earnings
738

 
2,376

 
1,273

Cash paid
(1,965
)
 
(1,363
)
 
(887
)
Ending balance
$
483

 
$
1,710

 
$
697