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Property, Plant and Equipment (Tables)
 6 Months Ended
Jun. 30, 2017
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, plant and equipment consists of the following:
 
 
June 30, 2017
 
December 31, 2016
 
(Unaudited)
 
(Audited)
 
(in thousands)
Land
$
257

 
$
257

Building and improvements
8,535

 
8,515

Machinery and equipment
11,535

 
8,583

Construction in progress
32,203

 
15,496

 
52,530

 
32,851

Less accumulated depreciation and amortization
(7,458
)
 
(6,636
)
Property, plant and equipment, net
$
45,072

 
$
26,215