Annual report pursuant to Section 13 and 15(d)

Acquisitions Acquisitions - ARS and Brim Equipment Acquisition Narrative (Details)

v3.19.1
Acquisitions Acquisitions - ARS and Brim Equipment Acquisition Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 21, 2018
USD ($)
hellicopter
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
[1]
Dec. 31, 2016
USD ($)
[2]
Business Acquisition [Line Items]        
Cash paid to acquire a business   $ 20,824 $ 42,008 $ 0
Air Rescue Systems Corporation and Brim Equipment Assets        
Business Acquisition [Line Items]        
Acquisition related costs   $ 300    
Cobra Aviation Services LLC        
Business Acquisition [Line Items]        
Number of assets purchased | hellicopter 2      
Cobra Aviation Services LLC | ARS        
Business Acquisition [Line Items]        
Cash paid to acquire a business $ 2,400      
Consideration to be paid upon completion of contractual obligations 300      
Total consideration transferred 4,200      
Brim Acquisitions LLC        
Business Acquisition [Line Items]        
Initial capital of acquisition $ 2,000      
Brim Acquisitions LLC | Cobra Aviation Services LLC        
Business Acquisition [Line Items]        
Equity method investment, ownership percentage 49.00%      
Brim Acquisitions LLC | Wexford Partners Investment Co. LLC        
Business Acquisition [Line Items]        
Equity method investment, ownership percentage 51.00%      
[1] Financial information includes the results attributable to Sturgeon for the entire period presented. See Note 4.
[2] Financial information has been recast to include results attributable to Sturgeon. See Note 4.