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Property and Equipment
 12 Months Ended
Dec. 31, 2012
Property and Equipment [Abstract]  
PROPERTY AND EQUIPMENT

(3) PROPERTY AND EQUIPMENT

Cost, accumulated depreciation, and the related estimated useful lives of property and equipment as of December 31, 2012 and 2011 are as follows:

 

                         
    2012     2011     Useful lives  

Office furniture and equipment

   $ 1,836     $ 1,425       3-7 years  

Rental inventory

     3,147       2,657       5 years  

Vehicles

     76       76       5 years  

Leasehold improvements

     375       368       2-6 years  

Assembly equipment

     168       89       7 years  
   

 

 

    

 

 

          
      5,602       4,615          

Less accumulated depreciation

     (1,751 )      (1,193 )         
   

 

 

    

 

 

          
    $ 3,851     $ 3,422          
   

 

 

    

 

 

          

Depreciation expense recorded on property and equipment was $864 and $806 for 2012 and 2011, respectively.