Annual report pursuant to Section 13 and 15(d)

Acquisitions Acquisitions - ARS and Brim Equipment Pro Forma Information (Details)

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Acquisitions Acquisitions - ARS and Brim Equipment Pro Forma Information (Details) - Cobra Aviation Services LLC - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
ARS    
Business Acquisition [Line Items]    
Revenues $ 0  
Net loss (25)  
Depreciation 20  
Revenues 3,055 $ 2,641
Net (loss) income 207 (39)
Brim Equipment Assets    
Business Acquisition [Line Items]    
Revenues 0  
Net loss 0  
Revenues 4,478 1,448
Net (loss) income $ 2,410 $ 459