Seismic Data Library (Tables)

12 Months Ended

Dec. 31, 2013

Seismic Data Library [Abstract]

Summary of the net book value of the Company’s seismic data library

The following table sets forth a summary of the net book value of the Company’s seismic data library (in thousands):

	As of December 31,
	2013		2012
U.S. Onshore:
Unconventional 3D	$	119,489	$	94,553
Conventional 3D	1,585		8,628
Canadian:
Unconventional 3D	74,046		76,335
Conventional 3D	362		294
2D	59		126
U.S. Offshore	237		181
Total	$	195,778	$	180,117