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Balance Sheet Components (Tables)
9 Months Ended
Sep. 30, 2018
Balance Sheet Components [Abstract]  
Components of Inventory



 

 

 

 

 



 

 

 

 

 



September 30,

 

December 31,

(in thousands)

2018

 

2017

Purchased materials

$

7,557 

 

$

8,884 

Work in process

 

7,367 

 

 

9,994 

Finished goods

 

4,770 

 

 

4,187 

Inventory

$

19,694 

 

$

23,065