Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Remaining Performance Obligation by Segment (Details)

v3.10.0.1
Revenue Recognition - Remaining Performance Obligation by Segment (Details)
$ in Thousands
Sep. 30, 2018
USD ($)
vessel
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 340,193
Number of multi-purpose service vessels | vessel 2
Intersegment eliminations  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 0
Fabrication | Operating Segments  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation 44,746
Shipyard | Operating Segments  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation 282,912
Shipyard | Operating Segments | Disputed  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation 30,100
Services | Operating Segments  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation 11,699
EPC | Operating Segments  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Remaining performance obligation $ 836