Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2012

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 the seismic data acquired is recorded as an asset. The activity related to non-monetary exchanges was as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Seismic data library additions	$	726	$	5,113	$	3,115	$	10,119
Revenue recognized on specific data licenses or selections of data	1,849		2,481		2,882		5,514
Revenue recognized related to acquisition contracts	1,645		931		3,273		2,314
Revenue recognized related to Solutions	—		69		20		69