Annual report pursuant to Section 13 and 15(d)

ACQUISITIONS AND DISPOSITIONS Sicher Helicopters SAS ("Sicher") (Details)

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ACQUISITIONS AND DISPOSITIONS Sicher Helicopters SAS ("Sicher") (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 09, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Business Acquisition [Line Items]        
Cash   $ 1,747 $ 0 $ 0
Goodwill   $ 0 $ 352  
Hauser        
Business Acquisition [Line Items]        
Cash $ 3,200      
Remaining ownership percentage acquired 75.00%      
Goodwill $ 1,500      
Other intangible assets $ 1,000      
Partner's ownership percent 25.00%      
Other (excluding unamortized discount)        
Business Acquisition [Line Items]        
Remaining ownership percentage acquired 100.00%