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Inventories
9 Months Ended
Sep. 30, 2011
Inventories [Abstract] 
Inventories

3. Inventories

 

$ in thousands    September 30,
2011
    December 31,
2010
 

Raw materials and subassemblies

   $ 3,629      $ 2,973   

Finished goods

     1,147        1,144   

Parts for resale

     607        562   

Reserve for obsolescence

     (327 )     (247 )
  

 

 

   

 

 

 
   $ 5,056      $ 4,432   
  

 

 

   

 

 

 

Amounts credited to the allowance for obsolete inventory and charged to cost of sales amounted to $47,000 and $131,000 for the three month period ended September 30, 2011 and 2010, and $196,000 and $100,000 for the nine month period ended September 30, 2011 and 2010, respectively.