Business Segment Information - Financial Data By Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Net revenues	$ 181,021	$ 166,823
Income (loss) from operations	(21,027)	269
Goodwill impairment	(6,689)	0
Reportable Segments
Segment Reporting Information [Line Items]
Income (loss) from operations	(4,873)	10,142
Intercompany Eliminations
Segment Reporting Information [Line Items]
Net revenues	(10,430)	(9,702)
Corporate, Eliminations and Other
Segment Reporting Information [Line Items]
Income (loss) from operations	(9,465)	(9,873)
Well Intervention
Segment Reporting Information [Line Items]
Net revenues	140,652	122,231
Goodwill impairment	(6,689)
Well Intervention \| Reportable Segments
Segment Reporting Information [Line Items]
Net revenues	140,652	122,231
Income (loss) from operations	(5,692)	9,641
Well Intervention \| Intercompany Eliminations
Segment Reporting Information [Line Items]
Net revenues	(3,304)	(3,225)
Robotics
Segment Reporting Information [Line Items]
Net revenues	35,258	39,041
Robotics \| Reportable Segments
Segment Reporting Information [Line Items]
Net revenues	35,258	39,041
Income (loss) from operations	(2,824)	(3,904)
Robotics \| Intercompany Eliminations
Segment Reporting Information [Line Items]
Net revenues	(7,126)	(6,477)
Production Facilities
Segment Reporting Information [Line Items]
Net revenues	15,541	15,253
Production Facilities \| Reportable Segments
Segment Reporting Information [Line Items]
Net revenues	15,541	15,253
Income (loss) from operations	$ 3,643	$ 4,405

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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