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Property, Plant and Equipment, Net (Tables)
 12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment, Net  
Components of property, plant and equipment

The components of our property, plant and equipment are summarized below (in thousands):

 

 

 

 

 

 

 

 

 

 

December 31, 

 

December 31, 

 

 

 

2017

 

2016

 

Property, plant and equipment:

 

 

 

 

 

 

 

Machinery and equipment, at cost

 

$

44,549

 

$

41,254

 

Less: accumulated depreciation and amortization

 

 

(40,845)

 

 

(37,311)

 

Building, at cost

 

 

32,461

 

 

29,600

 

Less: accumulated depreciation and amortization

 

 

(11,501)

 

 

(9,654)

 

Leasehold improvements, at cost

 

 

5,539

 

 

4,942

 

Less: accumulated depreciation and amortization

 

 

(4,288)

 

 

(3,608)

 

Construction in progress

 

 

20,615

 

 

2,582

 

 

 

$

46,530

 

$

27,805