Quarterly report pursuant to Section 13 or 15(d)

Business Segments and Customer Information - Segment Information (Details)

v3.19.2
Business Segments and Customer Information - Segment Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
segment
Jun. 30, 2018
USD ($)
Segment Reporting [Abstract]        
Number of reportable operating segments | segment     3  
Segment Reporting Information [Line Items]        
Revenues $ 189,111 $ 170,394 $ 359,030 $ 347,291
Operating income 16,416 13,855 28,229 25,448
Supply Chain Management Group        
Segment Reporting Information [Line Items]        
Revenues 53,805 54,263 105,509 110,127
Aviation Group        
Segment Reporting Information [Line Items]        
Revenues 54,997 35,804 104,367 68,554
Federal Services        
Segment Reporting Information [Line Items]        
Revenues 80,309 80,327 149,154 168,610
Operating Segments | Supply Chain Management Group        
Segment Reporting Information [Line Items]        
Revenues 53,805 54,263 105,509 110,127
Operating income 7,557 8,168 14,545 15,764
Operating Segments | Aviation Group        
Segment Reporting Information [Line Items]        
Revenues 54,997 35,804 104,367 68,554
Operating income 5,204 2,846 8,252 5,107
Operating Segments | Federal Services        
Segment Reporting Information [Line Items]        
Revenues 80,309 80,327 149,154 168,610
Operating income 5,059 3,606 8,444 6,084
Corporate, Non-Segment        
Segment Reporting Information [Line Items]        
Operating income $ (1,404) $ (765) $ (3,012) $ (1,507)