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Business Segment Information - Summary Of Financial Data By Reportable Segment (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016
Segment Reporting Information [Line Items] |  |
Net revenues | $ 104,528 | $ 91,039
Income (loss) from operations | (17,705) | (30,756)
Intercompany Elimination [Member] |  |
Segment Reporting Information [Line Items] |  |
Net revenues | (8,436) | (5,493)
Income (loss) from operations | 221 | 168
Corporate and Other [Member] |  |
Segment Reporting Information [Line Items] |  |
Income (loss) from operations | (9,962) | (8,669)
Well Intervention [Member] | Reportable Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Net revenues | 74,621 | 46,056
Income (loss) from operations | 1,418 | (16,688)
Well Intervention [Member] | Intercompany Elimination [Member] |  |
Segment Reporting Information [Line Items] |  |
Net revenues | (1,373) | (641)
Robotics [Member] | Reportable Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Net revenues | 21,968 | 31,994
Income (loss) from operations | (16,306) | (12,750)
Robotics [Member] | Intercompany Elimination [Member] |  |
Segment Reporting Information [Line Items] |  |
Net revenues | (7,063) | (4,852)
Production Facilities [Member] | Reportable Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Net revenues | 16,375 | 18,482
Income (loss) from operations | $ 6,924 | $ 7,183

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