Quarterly report pursuant to Section 13 or 15(d)

ESCROW DEPOSITS Narrative (Details)

v3.5.0.2
ESCROW DEPOSITS Narrative (Details)
3 Months Ended 6 Months Ended
Sep. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
helicopter
Dec. 31, 2015
USD ($)
Significant Acquisitions and Disposals [Line Items]        
Deposits in like-kind exchange escrow accounts   $ 0   $ 0
Proceeds from disposition of property and equipment   $ 5,910,000 $ 8,384,000  
Light Twin Helicopter        
Significant Acquisitions and Disposals [Line Items]        
Deposits in like-kind exchange escrow accounts       $ 2,800,000
Number of disposals | helicopter     1  
Proceeds from disposition of property and equipment $ 2,800,000      
Hauser | AW139 Helicopter        
Significant Acquisitions and Disposals [Line Items]        
Escrow deposit by Hauser     $ 11,800,000