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Seismic Equipment Lease Pool and Property and Equipment
12 Months Ended
Jan. 31, 2012
Seismic Equipment Lease Pool and Property and Equipment [Abstract]  
Seismic Equipment Lease Pool and Property and Equipment

7. Seismic Equipment Lease Pool and Property and Equipment

Seismic equipment lease pool and property and equipment consisted of the following (in thousands):

 

                 
    As of January 31,  
    2012     2011  

Recording channels

  $ 110,730     $ 72,786  

Other peripheral equipment

    112,763       94,097  
   

 

 

   

 

 

 

Cost of seismic equipment lease pool

    223,493       166,883  
   

 

 

   

 

 

 

Land and buildings

    366       366  

Furniture and fixtures

    8,020       6,761  

Autos and trucks

    680       663  
   

 

 

   

 

 

 

Cost of property and equipment

    9,066       7,790  
   

 

 

   

 

 

 

Cost of seismic equipment lease pool and property and equipment

    232,559       174,673  

Less accumulated depreciation

    (112,182     (95,578
   

 

 

   

 

 

 

Net book value of seismic equipment lease pool and property and equipment

  $ 120,377     $ 79,095  
   

 

 

   

 

 

 

 

                 
    As of January 31,  
    2012     2011  

Location of seismic equipment lease pool and property and equipment (in thousands):

               

United States

  $ 65,922     $ 56,206  

Canada

    23,856       11,544  

South America

    21,963       4,384  

Australia

    2,553       3,443  

Russia

    2,323       3,009  

Singapore

    3,352       354  

United Kingdom

    232       155  

Europe

    176       —    
   

 

 

   

 

 

 

Net book value of seismic equipment lease pool and property and equipment

  $ 120,377     $ 79,095