Annual report pursuant to Section 13 and 15(d)

INVESTMENTS, AT EQUITY, ADVANCES TO 50% OR LESS OWNED COMPANIES Era Training Center Narrative (Details)

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INVESTMENTS, AT EQUITY, ADVANCES TO 50% OR LESS OWNED COMPANIES Era Training Center Narrative (Details) (Era Training Center [Member], USD $)
 12 Months Ended
Dec. 31, 2010
flight_simulator
Dec. 31, 2012
Equity Method Investee [Member]
Dec. 31, 2011
Equity Method Investee [Member]
Dec. 31, 2010
Equity Method Investee [Member]
Dec. 31, 2013
Equity Method Investee [Member]
Helicopter, Management and Other Services [Member]
Dec. 31, 2012
Equity Method Investee [Member]
Helicopter, Management and Other Services [Member]
Dec. 31, 2011
Equity Method Investee [Member]
Helicopter, Management and Other Services [Member]
Dec. 31, 2013
Equity Method Investee [Member]
Simulator Fees [Member]
Dec. 31, 2012
Equity Method Investee [Member]
Simulator Fees [Member]
Dec. 31, 2011
Equity Method Investee [Member]
Simulator Fees [Member]
Schedule of Equity Method Investments [Line Items]                    
Expenses from transactions with related party         $ 400,000 $ 500,000 $ 700,000 $ 700,000 $ 800,000 $ 100,000
Notes receivable to related party       3,200,000            
Number of flight simulators purchased 2                  
Notes receivable interest rate       6.00%            
Quarterly principal and interest payment on notes receivable with related party       100,000            
Additional advances on notes receivable with related party   $ 800,000 $ 1,200,000