Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Noncontrolling Interests in Subsidiaries (Details Textual)

v3.10.0.1
Note 10 - Noncontrolling Interests in Subsidiaries (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 08, 2018
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total   $ (15,766) $ (22,356) $ (74,083) $ (66,444)
Net Income (Loss) Attributable to Noncontrolling Interest, Total   191 $ (1,881) (4,269) $ (4,582)
Falcon Global Holdings [Member]          
Joint Venture, Total Capital $ 112,500        
Joint Venture, Contribution from Previous Joint Venture 43,300        
Joint Venture, Contribution from Noncontrolling Interest $ 18,800        
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners 28.00%        
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total       14,200  
Net Income (Loss) Attributable to Noncontrolling Interest, Total       4,000  
Windcat Workboats [Member]          
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total       2,000  
Net Income (Loss) Attributable to Noncontrolling Interest, Total       200  
Net Assets, Ending Balance   $ 18,500   $ 18,500