Percentage of gross profit over revenue.

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Income (Loss) from Equity Method Investments, Including Impairments

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Multi-client data library impairment charges.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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The net amount of nonoperating interest income (expense).

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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The net result for the period of deducting operating expenses from operating revenues.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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Segment and Geographic Information - Summary of Segment Information (Details) $ in Thousands	1 Months Ended	3 Months Ended								6 Months Ended	12 Months Ended
	Aug. 31, 2016 segment	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2016 segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments \| segment	4									3
Reclassified its previously reported results to reflect segment changes
Revenues		$ 35,369	$ 78,622	$ 36,152	$ 22,665	$ 77,466	$ 66,674	$ 36,795	$ 40,578		$ 172,808	$ 221,513	$ 509,558
Gross profit (loss)		8,344	31,765	4,853	(8,930)	22,818	11,108	(10,135)	(15,788)		36,032	8,003	62,223
Income (loss) from operations		(8,318)	11,864	(16,588)	(30,129)	(380)	(12,874)	(40,689)	(46,689)		(43,171)	(100,632)	(117,929)
Interest expense, net		(4,442)	(4,607)	(4,702)	(4,734)	(4,667)	(4,854)	(4,607)	(4,625)		(18,485)	(18,753)	(19,382)
Equity in losses of investments											0	0	(49,485)
Other income (expense)		$ 4,974	$ (2,027)	$ (1,717)	$ 120	$ 240	$ (346)	$ 101,600	$ (3,219)		1,350	98,275	79,860
Loss before income taxes											(60,306)	(21,110)	(106,936)
Impairment of multi-client data library											0	399	100,100
Operating segments [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											172,808	221,513	509,558
Gross profit (loss)											$ 36,032	$ 8,003	$ 62,223
Gross margin											21.00%	4.00%	12.00%
Operating segments [Member] \| Devices and Optimization Software & Services [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											$ 43,502	$ 64,263	$ 128,410
Operating segments [Member] \| E & P Technology & Services [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											92,889	157,250	277,904
Gross profit (loss)											$ 4,708	$ 13,508	$ (24,345)
Gross margin											5.00%	9.00%	(9.00%)
Income (loss) from operations											$ (16,446)	$ (24,941)	$ (80,653)
Impairment of multi-client data library													100,100
Operating segments [Member] \| E & P Technology & Services [Member] \| New Venture [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											27,362	48,294	98,649
Operating segments [Member] \| E & P Technology & Services [Member] \| Data Library [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											39,989	63,326	66,180
Operating segments [Member] \| E & P Technology & Services [Member] \| New Venture and Data Library [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											67,351	111,620	164,829
Operating segments [Member] \| E & P Technology & Services [Member] \| Imaging Services [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											25,538	45,630	113,075
Operating segments [Member] \| E & P Operations Optimization [Member]
Reclassified its previously reported results to reflect segment changes
Gross profit (loss)											$ 21,745	$ 33,995	$ 66,951
Gross margin											50.00%	53.00%	52.00%
Income (loss) from operations											$ 9,652	$ 20,131	$ 20,201
Write down of goodwill													21,900
Operating segments [Member] \| E & P Operations Optimization [Member] \| Devices [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											26,746	36,269	88,417
Operating segments [Member] \| E & P Operations Optimization [Member] \| Optimization Software and Services [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											16,756	27,994	39,993
Operating segments [Member] \| Ocean Bottom Services [Member]
Reclassified its previously reported results to reflect segment changes
Revenues											36,417	0	103,244
Gross profit (loss)											$ 9,579	$ (39,500)	$ 19,617
Gross margin											26.00%	0.00%	19.00%
Income (loss) from operations											$ (1,756)	$ (55,080)	$ (4,440)
Support and other [Member]
Reclassified its previously reported results to reflect segment changes
Income (loss) from operations											$ (34,621)	$ (40,742)	$ (53,037)