Intangibles and Goodwill - Schedule of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill. start	$ 213,425	$ 219,412
Adjustments to goodwill acquired in previous year		(5,987)
Impairment	(113,941)
Other	(39)
Goodwill. end	99,445	213,425
Reservoir Description Segment [Member]
Goodwill [Roll Forward]
Goodwill. start	99,484	99,484
Adjustments to goodwill acquired in previous year		0
Impairment	0
Other	(39)
Goodwill. end	99,445	99,484
Production Enhancement Segment [Member]
Goodwill [Roll Forward]
Goodwill. start	113,941	119,928
Adjustments to goodwill acquired in previous year		(5,987)
Impairment	(113,941)
Other	0
Goodwill. end	$ 0	$ 113,941

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.

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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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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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