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Property and Equipment
 3 Months Ended
Mar. 31, 2017
Property, Plant and Equipment [Abstract]  
Property and Equipment
5. Property and equipment:

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

 

     March 31,
2017		      December 31,
2016		  

Machinery & equipment

    $ 4,907      $ 4,476  

Computer equipment & software

      464        464  

Office furniture & equipment

      202        202  

Leasehold improvements

      53        53  

Idle equipment

      1,486        1,486  
  

 

 

     

 

 

  

Total

      7,112        6,681  

Less accumulated depreciation

      (2,563 )       (2,451 ) 
  

 

 

     

 

 

  

Total property, plant & equipment, net

    $ 4,549      $ 4,230  
  

 

 

     

 

 

  

Depreciation expense was approximately $0.1 million and $0.09 million for the three month periods ended March 31, 2017 and 2016, respectively.