Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2018

Revenue from Contract with Customer [Abstract]

The following table presents the Company’s revenues disaggregated by component (in thousands):



	Three Months Ended March 31,
	2018		2017
Acquisition underwriting revenue	$	3,201	$	6,913
Resale licensing revenue	15,816		13,195
Total seismic revenue	19,017		20,108
Solutions and other	472		487
Total revenue	$	19,489	$	20,595

Revenue Recognized From Non-Monetary Exchanges

The activity related to non-monetary exchanges was as follows (in thousands):



	Three Months Ended March 31,
	2018		2017
Seismic data library additions	$	—	$	250
Revenue recognized on specific data licenses or selections of data	—		250
Revenue recognized related to acquisition contracts	—		39
Revenue recognized related to Solutions and other revenue	5		—

Deferred Revenue Balance, Recognized By Year

The deferred revenue balance as of March 31, 2018 will be recognized no later than the following, based on the expiration of the selection period or the Company’s estimate of progress on acquisition projects and the availability of data products, although some revenue may be recognized earlier (in thousands):



2018	$	10,716
2019	100
2020 and thereafter	2,049