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Property and Equipment
 9 Months Ended
Sep. 30, 2018
Property, Plant and Equipment [Abstract]  
Property and Equipment

6. Property and equipment:

Property and equipment, summarized by major category, consist of the following as of:

 

     September 30,
2018		      December 31,
2017		  

Machinery & equipment

    $ 5,623      $ 5,428  

Computer equipment & software

      446        399  

Office furniture & equipment

      169        169  

Leasehold improvements

      44        44  

Idle equipment

      679        766  
  

 

 

     

 

 

  

Total

      6,961        6,806  
  

 

 

     

 

 

  

Less accumulated depreciation and amortization

      (3,791 )       (3,028 ) 
  

 

 

     

 

 

  

Total property and equipment, net

    $ 3,170      $ 3,778  
  

 

 

     

 

 

  

Depreciation expense was $0.2 million for each of the three-month periods ended September 30, 2018 and September 30, 2017, respectively. Depreciation expense was $0.7 million and $0.5 million for the nine-month periods ended September 30, 2018 and September 30, 2017, respectively.