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Inventories (Tables)
3 Months Ended
Mar. 31, 2017
Inventory Disclosure [Abstract]  
Inventories

Inventories consisted of the following at March 31, 2017 (unaudited) and December 31, 2016 (in thousands):  

 

 

March 31,  2017

 

 

December 31, 2016

 

 

(in thousands)

 

Raw materials

$

569

 

 

$

513

 

Work-in-process

 

523

 

 

 

728

 

 

 

1,092

 

 

 

1,241

 

Less: allowance

 

(134

)

 

 

(60

)

Total inventories

$

958

 

 

$

1,181