Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES (Details)

v3.3.1.900
COMMITMENTS AND CONTINGENCIES (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Oct. 31, 2015
USD ($)
Apr. 30, 2014
Dec. 31, 2015
USD ($)
helicopter
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Operating Leased Assets [Line Items]          
Unfunded capital commitments     $ 150,300    
Unfunded capital commitments due in next twelve months     38,900    
Non-cancellable portion due next twelve months     13,400    
Deposits paid on options not yet exercised     1,500    
Amount eligible for termination     123,600    
Amount inclusive of deposits paid and without further liability     3,200    
Aircraft maintenance credits period   4 years      
Aircraft maintenance utilized credits     $ 5,000 $ 4,400  
Number of helicopters leased | helicopter     4    
Rental expense     $ 4,500 $ 4,400 $ 6,000
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity          
2016     1,681    
2017     1,667    
2018     976    
2019     515    
2020     413    
Years subsequent to 2020     $ 10,712    
Minimum          
Operating Leased Assets [Line Items]          
Expected duration of aircraft maintenance credits     3 months    
Lease term range     1 year    
Maximum          
Operating Leased Assets [Line Items]          
Expected duration of aircraft maintenance credits     6 months    
Lease term range     10 years    
Aeroleo | Municipal Tax Authorities of Rio de Janeiro and Macae | Foreign Tax Authority          
Operating Leased Assets [Line Items]          
Penalties     $ 5,700    
Aeroleo | State of Rio de Janeiro | Foreign Tax Authority          
Operating Leased Assets [Line Items]          
Penalties $ 1,600        
Brazilian Tax Dispute with Respect to Certain Tax Credits | Aeroleo | Foreign Tax Authority          
Operating Leased Assets [Line Items]          
Penalties     1,700    
Brazilian Tax Dispute with Respect to Employer Social Security Contributions | Aeroleo | Foreign Tax Authority          
Operating Leased Assets [Line Items]          
Penalties     3,100    
Other litigation matters | Aeroleo | Foreign Tax Authority          
Operating Leased Assets [Line Items]          
Escrow deposits     $ 5,100