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Industry Segments (Tables)

12 Months Ended

Dec. 31, 2012

Geographic information for the periods presented was as follows (in thousands):



	United States		Canada		Total
Year Ended December 31, 2012
Revenue	$	157,381	$	83,077	$	240,458
Assets ⁽¹⁾	102,212		82,723		184,935
Year Ended December 31, 2011
Revenue	$	152,792	$	65,216	$	218,008
Assets ⁽¹⁾	65,156		60,577		125,733
Year Ended December 31, 2010
Revenue	$	129,888	$	45,668	$	175,556
Assets ⁽¹⁾	76,121		35,429		111,550

(1)Assets include net seismic data library and net property and equipment.

Revenue by type of service for the periods

Revenue by type of service for the periods presented was as follows (in thousands):



	Year Ended December 31,
	2012		2011		2010
Acquisition and licensing of seismic data	$	234,785	$	213,656	$	171,778
Reproduction and delivery of seismic data and other services	5,673		4,352		3,778
Total revenue	$	240,458	$	218,008	$	175,556

- Definition

Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries.

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- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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