Annual report pursuant to Section 13 and 15(d)

Equity Method Investment (Details)

v3.19.1
Equity Method Investment (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 21, 2018
Dec. 31, 2018
Dec. 31, 2017
[1]
Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]        
Cash paid to acquire a business   $ 20,824 $ 42,008 $ 0 [2]
Loss from equity investee   16 $ 0 $ 0
Brim Acquisitions LLC        
Schedule of Equity Method Investments [Line Items]        
Initial capital of acquisition $ 2,000      
Carrying value of equity method investment   1,000    
Loss from equity investee   $ 20    
Cobra Aviation Services LLC | Brim Acquisitions LLC        
Schedule of Equity Method Investments [Line Items]        
Economic interest 49.00%      
Cobra Aviation Services LLC | Brim Equipment Assets        
Schedule of Equity Method Investments [Line Items]        
Cash paid to acquire a business $ 1,400      
Business combination, contingent consideration, liability $ 600      
Wexford Partners Investment Co. LLC | Brim Acquisitions LLC        
Schedule of Equity Method Investments [Line Items]        
Economic interest 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.