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Revenue Recognition (Tables)
 6 Months Ended
Jun. 30, 2017
Revenue Recognition [Abstract]  
Revenue Recognized From Non-Monetary Exchanges
Due to the Company’s revenue recognition policies, revenue recognized on non-monetary exchange transactions may not occur at the same time that the seismic data acquired is recorded as an asset. The activity related to non-monetary exchanges was as follows (in thousands): 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2017
 
2016
 
2017
 
2016
Seismic data library additions
$
1,000

 
$
800

 
$
1,250

 
$
1,022

Revenue recognized on specific data licenses or selections of data
1,000

 
1,340

 
1,250

 
1,340

Revenue recognized related to acquisition contracts
87

 
23

 
126

 
24

Revenue recognized related to Solutions and other revenue
31

 
—

 
31

 
—