Asset Impairments - Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Goodwill [Roll Forward]
Beginning balance	$ 911,113
Impairment	(616,271)	$ 0
Foreign currency translation	(3,124)
Ending balance	291,718
Production & Automation Technologies
Goodwill [Roll Forward]
Beginning balance	809,977
Impairment	(616,271)
Foreign currency translation	(3,124)
Ending balance	190,582
Drilling Technologies
Goodwill [Roll Forward]
Beginning balance	101,136
Impairment	0
Foreign currency translation	0
Ending balance	$ 101,136

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 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

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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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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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