Quarterly report pursuant to Section 13 or 15(d)

Noncontrolling Interests in Subsidiaries (Details)

v3.7.0.1
Noncontrolling Interests in Subsidiaries (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Noncontrolling Interests in Subsidiaries [Line Items]          
Noncontrolling interests in subsidiaries $ 17,834   $ 17,834   $ 5,544
Net Loss (36,489) $ (30,789) (44,088) $ (43,369)  
Net Loss Attributable to Noncontrolling Interests in Subsidiaries $ (2,497) $ (209) (2,701) (830)  
Investments in and advances to 50% or less owned companies     $ 4,216 6,194  
Falcon Global [Member]          
Noncontrolling Interests in Subsidiaries [Line Items]          
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners 50.00%   50.00%    
Noncontrolling interests in subsidiaries $ 14,855   $ 14,855   0
Assets, Net $ 29,700   29,700    
Net Loss     (5,000)    
Net Loss Attributable to Noncontrolling Interests in Subsidiaries     $ (2,500)    
Windcat Workboats Ltd. [Member]          
Noncontrolling Interests in Subsidiaries [Line Items]          
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners 12.50%   12.50%    
Noncontrolling interests in subsidiaries $ 2,695   $ 2,695   5,266
Assets, Net $ 21,600   21,600    
Net Loss     (700) (3,300)  
Net Loss Attributable to Noncontrolling Interests in Subsidiaries     $ (200) $ (800)  
Noncontrolling Interest Acquired, Percent 12.50%   12.50%    
Investments in and advances to 50% or less owned companies     $ 3,700    
Other Noncontrolling Interests [Member]          
Noncontrolling Interests in Subsidiaries [Line Items]          
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners 1.80%   1.80%    
Noncontrolling interests in subsidiaries $ 284   $ 284   $ 278