Business Segment Information - Financial Data By Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Net revenues	$ 162,612	$ 161,941	$ 312,737	$ 325,356
Income (loss) from operations	(18,976)	(10,941)	(51,953)	(11,496)
Reportable Segments
Segment Reporting Information [Line Items]
Income (loss) from operations	(6,837)	(1,782)	(31,264)	7,041
Intercompany Eliminations
Segment Reporting Information [Line Items]
Net revenues	(11,207)	(16,233)	(23,094)	(25,189)
Corporate, Eliminations and Other
Segment Reporting Information [Line Items]
Income (loss) from operations	(12,139)	(9,159)	(20,689)	(18,537)
Well Intervention
Segment Reporting Information [Line Items]
Net revenues	106,291	132,305	212,658	266,073
Well Intervention | Reportable Segments
Segment Reporting Information [Line Items]
Net revenues	106,291	132,305	212,658	266,073
Income (loss) from operations	(22,548)	(6,719)	(54,306)	(1,476)
Well Intervention | Intercompany Eliminations
Segment Reporting Information [Line Items]
Net revenues	(3,893)	(10,206)	(7,743)	(12,793)
Robotics
Segment Reporting Information [Line Items]
Net revenues	49,850	31,651	87,201	53,807
Robotics | Reportable Segments
Segment Reporting Information [Line Items]
Net revenues	49,850	31,651	87,201	53,807
Income (loss) from operations	9,666	255	11,146	(2,679)
Robotics | Intercompany Eliminations
Segment Reporting Information [Line Items]
Net revenues	(7,314)	(6,027)	(15,351)	(12,396)
Production Facilities
Segment Reporting Information [Line Items]
Net revenues	17,678	14,218	35,972	30,665
Production Facilities | Reportable Segments
Segment Reporting Information [Line Items]
Net revenues	17,678	14,218	35,972	30,665
Income (loss) from operations	$ 6,045	$ 4,682	$ 11,896	$ 11,196