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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 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 | 0.2 | $ 0.6 | 0.3 | $ 1.1 |
Note receivable | 3.0 |  | 3.0 |  | 3.2
Training Services | Era Training Center, LLC |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Note receivable | 3.9 |  | 3.9 |  | $ 4.0
Payments for services | 0.1 | 0.2 | 0.4 | 0.3 |
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 | 0.1 | 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 | $ 0.2 | $ 0.2 |

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