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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Balance Type:	debit
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Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Goodwill
Impairment of goodwill	$ 0	$ 0	$ 4,150	$ 0
Optimization Software & Services
Goodwill
Goodwill before impairment	19,200		19,200
Impairment of goodwill			4,150
E&P Technology & Services
Goodwill
Goodwill before impairment	$ 2,900		2,900
Impairment of goodwill			$ 0