Quarterly report pursuant to Section 13 or 15(d)

COMMITMENTS AND CONTINGENCIES (Details)

v3.10.0.1
COMMITMENTS AND CONTINGENCIES (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 03, 2018
USD ($)
Jun. 30, 2018
USD ($)
helicopter
Jun. 30, 2018
USD ($)
helicopter
Dec. 31, 2017
USD ($)
Loss Contingencies [Line Items]        
Number of helicopter purchase agreements cancelled | helicopter     2  
Penalties on cancellation     $ 500  
Unfunded capital commitments   $ 82,400 82,400  
Unfunded capital commitments payable   10,900 10,900  
Deposits paid   1,300 1,300  
Commitments eligible for termination   83,700 83,700  
Liquidated damages   2,100 2,100  
Other current assets   0 0 $ 3,250
Contingent Fees Sought by Former Tax Consultant | Pending Litigation        
Loss Contingencies [Line Items]        
Taxes, penalties and interest     500  
Employment-Related Litigation Matters | Pending Litigation        
Loss Contingencies [Line Items]        
Taxes, penalties and interest     200  
Unfavorable Regulatory Action | Brazilian Customs Authorities Claims | Pending Litigation        
Loss Contingencies [Line Items]        
Taxes, penalties and interest     200  
Foreign Tax Authority | Municipal Tax Authorities of Rio de Janeiro and Macae | Aeroleo        
Loss Contingencies [Line Items]        
Taxes, penalties and interest     8,800  
Foreign Tax Authority | Foreign Tax Authority | Aeroleo | Brazilian Tax Dispute with Respect to Employer Social Security Contributions        
Loss Contingencies [Line Items]        
Taxes, penalties and interest     2,600  
Foreign Tax Authority | Foreign Tax Authority | Aeroleo | Other Litigation Matters        
Loss Contingencies [Line Items]        
Other current assets   7,600 7,600  
Foreign Tax Authority | State of Rio de Janeiro | Aeroleo        
Loss Contingencies [Line Items]        
Taxes, penalties and interest   $ 400    
Installment payments     200  
Damages dismissed     1,600  
Brazil Taxing Authorities | Tax Disputes over Tax Credits Applied to Offset Social Tax Liability | Pending Litigation        
Loss Contingencies [Line Items]        
Taxes, penalties and interest     $ 300  
AW189 Heavy Helicopters        
Loss Contingencies [Line Items]        
Number of helicopters | helicopter   3 3  
Number of additional helicopters | helicopter   10 10  
AW169 Light Twin Helicopters        
Loss Contingencies [Line Items]        
Number of helicopters | helicopter   5 5  
Subsequent Event        
Loss Contingencies [Line Items]        
Damages paid, value $ 42,000      
Period to use trade account credits 5 years