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Rental Equipment
 12 Months Ended
Sep. 30, 2012
Rental Equipment [Abstract]  
Rental Equipment

8. Rental Equipment:

Rental equipment consisted of the following (in thousands):

 

                 
    AS OF
SEPTEMBER 30,		  
    2012     2011  

Rental equipment, primarily geophones and related products

   $ 39,766     $ 21,250  

Accumulated depreciation

     (11,913 )      (9,305 ) 
   

 

 

    

 

 

  
    $ 27,853     $ 11,945  
   

 

 

    

 

 

  

Rental equipment depreciation expense was $5.5 million, $2.8 million and $1.1 million in fiscal years 2012, 2011 and 2010, respectively. We transferred $2.0 million and $0.3 million of inventories to our rental equipment during fiscal years 2012 and 2011 which had a non-cash impact.