Quarterly report pursuant to Section 13 or 15(d)

Segment Disclosures - Narrative (Details)

v3.10.0.1
Segment Disclosures - Narrative (Details)
9 Months Ended
Sep. 30, 2018
jacket
segment
Segment Reporting [Abstract]  
Number of operating segments 4
Number of corporate non-operating segments 1
Number of jackets and piles constructed | jacket 5