Seismic Data Library (Tables)

12 Months Ended

Dec. 31, 2014

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,
	2014		2013
U.S. Onshore:
Unconventional 3D	$	117,962	$	119,489
Conventional 3D	1,377		1,585
Canadian:
Unconventional 3D	44,855		74,046
Conventional 3D	199		362
2D	449		59
U.S. Offshore	237		237
Total	$	165,079	$	195,778