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Statement Of Cash Flow Information (Tables)
3 Months Ended
Mar. 31, 2013
Supplemental Cash Flow Elements [Abstract]  
Schedule of Noncash or Part Noncash Acquisitions
The Company had non-cash additions to its seismic data library comprised of the following for the periods indicated (in thousands): 
 
Three Months Ended
March 31,
 
2013
 
2012
Non-monetary exchanges related to resale licensing revenue
$
324

 
$
709

Completion of data in progress from prior non-monetary exchanges
2,392

 

Total non-cash additions to seismic data library
$
2,716

 
$
709

Schedule of Non-Cash Revenue
Non-cash revenue consisted of the following for the periods indicated (in thousands):
 
Three Months Ended
March 31,
 
2013
 
2012
Acquisition revenue on underwriting from non-monetary exchange contracts
$
57

 
$
1,268

Licensing revenue from specific data licenses and selections on non-monetary exchange contracts
578

 
827

Solutions revenue recognized from non-monetary exchange contracts

 
20

Total non-cash revenue
$
635

 
$
2,115