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Basis of Presentation and Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
The activity related to non-monetary exchanges
The activity related to non-monetary exchanges was as follows (in thousands): 
 
 
Year Ended December 31,
 
 
2012
 
2011
 
2010
Seismic data library additions
 
$
3,376

 
$
10,215

 
$
10,545

Revenue recognized on specific data licenses or selections of data
 
3,046

 
7,169

 
7,187

Revenue recognized related to acquisition contracts
 
5,452

 
2,274

 
2,677

Revenue recognized related to Solutions
 
20

 
71

 
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