Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 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 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,
	2017		2016
Seismic data library additions	$	250	$	222
Revenue recognized on specific data licenses or selections of data	250		—
Revenue recognized related to acquisition contracts	39		1