Quarterly report pursuant to Section 13 or 15(d)

ACQUISITIONS AND DISPOSITIONS (Details)

v3.19.3
ACQUISITIONS AND DISPOSITIONS (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
USD ($)
helicopter
Sep. 30, 2019
USD ($)
helicopter
operating_facility
Sep. 30, 2018
USD ($)
helicopter
operating_facility
Dec. 31, 2018
USD ($)
helicopter
Property, Plant and Equipment [Line Items]        
Purchases of property and equipment   $ 5,168,000 $ 7,686,000  
Interest capitalized during the period   $ 0 100,000  
Number of helicopter acquisitions | helicopter   0    
Proceeds from disposition of property and equipment   $ 9,252,000 $ 29,520,000  
Number of helicopter dispositions | helicopter 2 3 20 6
Number of operating facilities dispositions | operating_facility   2 2  
Accounts receivable acquired     $ 14,300,000  
Construction in Progress        
Property, Plant and Equipment [Line Items]        
Interest capitalized in property and equipment $ 700,000 $ 700,000   $ 700,000
S92 Heavy Helicopters        
Property, Plant and Equipment [Line Items]        
Number of helicopter acquisitions | helicopter     1