Quarterly report pursuant to Section 13 or 15(d)

Business Segments and Customer Information (Details)

v3.7.0.1
Business Segments and Customer Information (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
segment
Mar. 31, 2016
USD ($)
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]    
Number of reportable operating segments | segment 3  
Segment Reporting Information [Line Items]    
Revenues $ 197,294 $ 143,636
Operating income 14,196 12,741
Operating Segments | Supply Chain Management Group    
Segment Reporting Information [Line Items]    
Revenues 56,085 51,143
Operating income 8,483 9,028
Operating Segments | Aviation    
Segment Reporting Information [Line Items]    
Revenues 32,354 33,546
Operating income 2,336 3,289
Operating Segments | Federal Services Group    
Segment Reporting Information [Line Items]    
Revenues 108,855 58,947
Operating income 3,918 1,277
Corporate, Non-Segment    
Segment Reporting Information [Line Items]    
Operating income $ (541) $ (853)