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Business Segment Information - Financial Data by Reportable Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | $ 107,267 | $ 166,016 | $ 198,306 | $ 355,657
Income (loss) from operations | (9,295) | 7,674 | (40,051) | 30,002
Reportable Segments [Member] | Well Intervention [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | 59,919 | 85,675 | 105,975 | 189,726
Income (loss) from operations | (538) | 4,135 | (17,226) | 18,929
Reportable Segments [Member] | Robotics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | 38,914 | 75,101 | 70,908 | 155,272
Income (loss) from operations | (8,823) | 4,303 | (21,573) | 13,760
Reportable Segments [Member] | Production Facilities [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | 18,957 | 20,293 | 37,439 | 38,678
Income (loss) from operations | 9,730 | 8,444 | 16,913 | 13,022
Intercompany Elimination [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | (10,523) | (15,053) | (16,016) | (28,019)
Income (loss) from operations | 163 | (199) | 331 | (93)
Intercompany Elimination [Member] | Well Intervention [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | (2,201) | (6,417) | (2,842) | (11,363)
Intercompany Elimination [Member] | Robotics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenues | (8,322) | (8,636) | (13,174) | (16,656)
Corporate and Other [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income (loss) from operations | $ (9,827) | $ (9,009) | $ (18,496) | $ (15,616)

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