Quarterly report pursuant to Section 13 or 15(d)

ACQUISITIONS AND DISPOSITIONS (Details)

v3.10.0.1
ACQUISITIONS AND DISPOSITIONS (Details)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
operating_facility
helicopter
Jun. 30, 2017
USD ($)
helicopter
Dec. 31, 2017
USD ($)
Property, Plant and Equipment [Line Items]            
Purchases of property and equipment       $ 5,958 $ 12,524  
Interest capitalized during the period       $ 97 451  
Number of helicopter dispositions | helicopter       20    
Number of operating facilities dispositions | operating_facility       2    
Proceeds from disposition of property and equipment       $ 29,497 5,689  
Receivables held-for-sale, amount $ 14,300 $ 14,300   14,300    
Gain on disposition of property plant equipment       2,400    
Sales-type lease, revenue       1,200    
Sales-type lease, net investment in lease 14,500 14,500   14,500    
Proceeds from lease payments 1,200          
Sales-type lease, interest income 200          
Gains on asset dispositions, net   (1,997) $ 5,061 2,417 $ 5,170  
Construction in Progress            
Property, Plant and Equipment [Line Items]            
Interest capitalized in property and equipment $ 700 $ 700   700   $ 1,900
AW189 Heavy Helicopters            
Property, Plant and Equipment [Line Items]            
Number of helicopter acquisitions | helicopter         2  
S92 Heavy Helicopters            
Property, Plant and Equipment [Line Items]            
Purchases of property and equipment       $ 2,800    
Number of helicopter acquisitions | helicopter       1 1  
H225 Helicopters            
Property, Plant and Equipment [Line Items]            
Number of helicopter dispositions | helicopter       5    
Sales-type lease, loss       $ 3,600