Revenue Recognition (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2013

Dec. 31, 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 March 31,
	2013		2012
Seismic data library additions	$	2,716	$	709
Revenue recognized on specific data licenses or selections of data	578		827
Revenue recognized related to acquisition contracts	57		1,268
Revenue recognized related to Solutions	—		20

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		—