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Property, Plant, and Equipment (Tables)
3 Months Ended
Mar. 31, 2017
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment
Property, plant and equipment consisted of the following:
(dollars in thousands)
March 31,
2017
 
December 31,
2016
Buildings
$
59,314

 
$
59,314

Machinery and equipment
49,278

 
49,079

Computer software
15,441

 
14,849

Computer equipment
4,729

 
4,599

Furniture and fixtures
1,774

 
1,772

Leasehold improvements
1,480

 
1,477

Land improvements
493

 
493

Land
395

 
401

Buildings improvements
192

 
189

Construction in progress
60,725

 
53,891

 
193,821

 
186,064

Accumulated depreciation and amortization
(26,018)

 
(23,832)

Total
$
167,803

 
$
162,232