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Inventories, net (Tables)
 12 Months Ended
Dec. 31, 2017
Inventories, net  
Schedule of components of inventories

 

 

 

 

 

 

 

 

 

 

December 31,

 

 

    

2017

    

2016

 

 

 

(in thousands)

 

Raw materials

 

$

82,313

 

$

80,503

 

Work in process

 

 

31,651

 

 

14,117

 

Finished goods (completed systems)

 

 

6,580

 

 

19,233

 

Inventories, net

 

$

120,544

 

$

113,853