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Property, Plant and Equipment (Tables)
 3 Months Ended
Mar. 31, 2017
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment consists of the following:
 
 
March 31, 2017
 
December 31, 2016
 
(Unaudited)
 
(Audited)
 
(in thousands)
Land
$
257

 
$
257

Building and improvements
8,523

 
8,515

Machinery and equipment
10,990

 
8,583

Construction in progress
21,674

 
15,496

 
41,444

 
32,851

Less accumulated depreciation and amortization
(7,031
)
 
(6,636
)
Property, plant and equipment, net
$
34,413

 
$
26,215