Segment Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($)
Segment Reporting [Abstract]
Number of segments \| segment			3
Summary of segment information
Net revenues	$ 24,743	$ 46,001	$ 58,251	$ 78,557
Gross profit (loss)	$ (1,517)	$ 15,618	$ 5,336	$ 21,719
Gross margin	(6.00%)	34.00%	9.00%	28.00%
Income (loss) from operations	$ (22,519)	$ (3,572)	$ (35,159)	$ (17,484)
Interest expense, net	(2,911)	(4,241)	(6,747)	(8,705)
Other income (expense), net	84	192	(707)	(4,876)
Loss before income taxes	(25,346)	(7,621)	(42,613)	(31,065)
E&P Technology & Services
Summary of segment information
Net revenues	15,188	33,882	39,756	57,192
Gross profit (loss)	$ (4,856)	$ 11,921	$ (513)	$ 15,931
Gross margin	(32.00%)	35.00%	(1.00%)	28.00%
E&P Technology & Services \| New Venture and Data Library [Member]
Summary of segment information
Net revenues	$ 9,850	$ 29,696	$ 29,524	$ 47,251
E&P Technology & Services \| New Venture
Summary of segment information
Net revenues	8,125	19,986	21,851	26,935
E&P Technology & Services \| Data Library
Summary of segment information
Net revenues	1,725	9,710	7,673	20,316
E&P Technology & Services \| Imaging Services
Summary of segment information
Net revenues	5,338	4,186	10,232	9,941
Operations Optimization
Summary of segment information
Net revenues	9,555	12,119	18,495	21,365
Gross profit (loss)	$ 4,933	$ 6,258	$ 9,244	$ 11,045
Gross margin	52.00%	52.00%	50.00%	52.00%
Operations Optimization \| Devices
Summary of segment information
Net revenues	$ 4,761	$ 7,679	$ 8,919	$ 12,669
Operations Optimization \| Optimization Software & Services
Summary of segment information
Net revenues	4,794	4,440	9,576	8,696
Ocean Bottom Integrated Technologies
Summary of segment information
Net revenues	0	0	0	0
Gross profit (loss)	$ (1,594)	$ (2,561)	$ (3,395)	$ (5,257)
Gross margin	0.00%	0.00%	0.00%	0.00%
Operating segments \| E&P Technology & Services
Summary of segment information
Income (loss) from operations	$ (10,206)	$ 6,353	$ (11,000)	$ 5,257
Operating segments \| Operations Optimization
Summary of segment information
Income (loss) from operations	1,243	3,022	2,029	4,571
Operating segments \| Ocean Bottom Integrated Technologies
Summary of segment information
Income (loss) from operations	(2,926)	(3,860)	(5,755)	(7,868)
Support and other
Summary of segment information
Income (loss) from operations	$ (10,630)	$ (9,087)	$ (20,433)	$ (19,444)

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