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INVESTMENTS, AT EQUITY, ADVANCES TO 50% OR LESS OWNED COMPANIES Aeroleo Narrative (Details) (USD $)
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12 Months Ended | 0 Months Ended | 6 Months Ended | 9 Months Ended | 0 Months Ended | 6 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 0 Months Ended | ||||||||||||||||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Jul. 02, 2011
Era do Brazil [Member]
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Dec. 31, 2013
Era do Brazil [Member]
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Dec. 31, 2011
Era do Brazil [Member]
Equity Method Investee [Member]
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Sep. 30, 2012
Era do Brazil [Member]
Equity Method Investee [Member]
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Dec. 31, 2012
Era do Brazil [Member]
Equity Method Investee [Member]
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Jul. 02, 2011
Era do Brazil [Member]
Equity Method Investee [Member]
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Mar. 02, 2012
Aeroleo [Member]
customer
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Jul. 02, 2011
Aeroleo [Member]
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Dec. 31, 2011
Aeroleo [Member]
helicopter
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Dec. 31, 2013
Aeroleo [Member]
helicopter
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Dec. 31, 2012
Aeroleo [Member]
helicopter
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Jul. 02, 2011
Aeroleo [Member]
Equity Method Investee [Member]
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Dec. 31, 2013
Aeroleo [Member]
Equity Method Investee [Member]
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Dec. 31, 2012
Aeroleo [Member]
Equity Method Investee [Member]
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Dec. 31, 2011
Aeroleo [Member]
Equity Method Investee [Member]
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Jul. 02, 2011
Co-venturer [Member]
Era do Brazil [Member]
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Jul. 02, 2011
Co-venturer [Member]
Aeroleo [Member]
Equity Method Investee [Member]
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| Schedule of Equity Method Investments [Line Items] | ||||||||||||||||||||||||||
| Ownership | 50.00% | 50.00% | [1] | 50.00% | 50.00% | [2] | ||||||||||||||||||||
| Voting ownership percentage | 50.00% | 20.00% | ||||||||||||||||||||||||
| Payments to Acquire Equity Method Investments | $ 0 | $ 10,627,000 | $ 21,840,000 | $ 4,800,000 | $ 4,800,000 | $ 4,800,000 | ||||||||||||||||||||
| Notes receivable to related party | 10,800,000 | 2,000,000 | 6,000,000 | 6,000,000 | ||||||||||||||||||||||
| Notes receivable interest rate | 6.00% | 6.00% | ||||||||||||||||||||||||
| Recognized impairment charge | 5,900,000 | 5,900,000 | ||||||||||||||||||||||||
| Number of customers that cancelled contracts | 1 | |||||||||||||||||||||||||
| Number of helicopters leased | 11 | 11 | 11 | |||||||||||||||||||||||
| Revenue from related parties | 300,000 | 400,000 | 16,200,000 | 17,600,000 | 14,000,000 | |||||||||||||||||||||
| Accounts receivable related parties | $ 21,000,000 | $ 5,300,000 | ||||||||||||||||||||||||
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