Details of Selected Balance Sheet Accounts Details of Selected Balance Sheet Accounts - Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill	$ 23,585	$ 22,915	$ 22,915
Impairment of goodwill	(4,150)	0
Impact of foreign currency translation adjustments	(1,137)		670
Goodwill	$ 18,298		23,585
Goodwill discount rate	19.00%
E&P Technology & Services
Goodwill [Roll Forward]
Goodwill	$ 2,943	2,943	2,943
Impairment of goodwill	0
Impact of foreign currency translation adjustments	0		0
Goodwill	2,943		2,943
Optimization Software & Services
Goodwill [Roll Forward]
Goodwill	20,642	$ 19,972	19,972
Impairment of goodwill	(4,150)
Impact of foreign currency translation adjustments	(1,137)		670
Goodwill	$ 15,355		$ 20,642

Goodwill, Discount Rate

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
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- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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- Definition

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.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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