Quarterly report pursuant to Section 13 or 15(d)

RELATED PARTY TRANSACTIONS (Details)

v3.8.0.1
RELATED PARTY TRANSACTIONS (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
SEACOR          
Related Party Transaction [Line Items]          
Payable due to Seacor (less than) $ 0.1   $ 0.1   $ 0.1
Dart          
Related Party Transaction [Line Items]          
Amount of purchased products 0.1 $ 0.5 0.4 $ 1.6  
Note receivable 2.9   2.9   3.2
Training Services | Era Training Center, LLC          
Related Party Transaction [Line Items]          
Note receivable 3.8   3.8   $ 4.0
Payments for services 0.1 0.1 0.5 0.4  
Era Training Center | Helicopter, Management and Other Services | Era Training Center, LLC          
Related Party Transaction [Line Items]          
Expenses from transactions with related party 0.1 0.1 0.2 0.2  
Aeroleo          
Related Party Transaction [Line Items]          
Contribution of capital from joint venture partner       6.3  
General and Administrative Expense | SEACOR          
Related Party Transaction [Line Items]          
Expenses from transactions with related party $ 0.1 $ 0.1 $ 0.3 $ 0.2