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Restructuring (Tables)
3 Months Ended
Mar. 31, 2017
Restructuring and Related Activities [Abstract]  
Restructuring and Related Costs
(Dollars in thousands)
Severance related to headquarters relocation
Balance at December 31, 2016
$
470

Provisions
193

Payments
(238
)
Balance at March 31, 2017
$
425