Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Trade, allowance for doubtful accounts	$ 264	$ 268
Notes and other, allowance for doubtful accounts	0	0
Seismic data library, accumulated amortization	1,096,003	1,074,260
Property and equipment, accumulated depreciation and amortization	15,088	14,971
Intangible assets, accumulated amortization	$ 42,686	$ 41,785
Common stock, par value per share (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100	100
Common stock, shares issued (in shares)	100	100
Common stock, shares outstanding (in shares)	100	100