Annual report pursuant to Section 13 and 15(d)

Business Segments and Customer Information - Narrative (Details)

v3.20.4
Business Segments and Customer Information - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
segment
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Segment Reporting Information [Line Items]        
Number of reportable operating segments | segment   3    
Loss on sale of a business entity and certain assets   $ (8,214) $ 0 $ 0
Goodwill and intangible asset impairment   (33,734) 0 0
Gain on sale of property   1,108 0 0
Gain on sale of contract   $ 0 $ 0 1,700
Miami, Florida        
Segment Reporting Information [Line Items]        
Gain on sale of property $ 1,100      
Federal and Defense        
Segment Reporting Information [Line Items]        
Increase (decrease) in depreciation and amortization expense       (8,100)
Aviation        
Segment Reporting Information [Line Items]        
Increase (decrease) in depreciation and amortization expense       3,700
Fleet        
Segment Reporting Information [Line Items]        
Increase (decrease) in depreciation and amortization expense       $ 4,400