Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.10.0.1
Subsequent Events (Details)
1 Months Ended 12 Months Ended
Jan. 31, 2019
USD ($)
business
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Subsequent Event [Line Items]        
Purchase price   $ 0 $ 0 $ 63,000
First Choice Aerospace, two companies        
Subsequent Event [Line Items]        
Acquisition-related expenses   $ 569,000    
First Choice Aerospace, two companies | Subsequent Event        
Subsequent Event [Line Items]        
Ownership percentage 100.00%      
Number of companies acquired | business 2      
Employment contracts, term 3 years      
Noncompete agreements, term 5 years      
Purchase price $ 112,000,000      
Potential earn-out payments, maximum $ 40,000,000