Quarterly report pursuant to Section 13 or 15(d)

Business Segments and Customer Information, Revenue by Customer (Details)

v2.4.0.8
Business Segments and Customer Information, Revenue by Customer (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Revenue, Major Customer [Line Items]    
Revenue, by customer $ 119,409 $ 119,157
U.S. Army/Army Reserve [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 33,698 31,593
U.S. Navy [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 24,614 25,404
U.S. Air Force [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 796 3,179
Total Department of Defense [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 59,108 60,176
U.S. Postal Service [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 39,329 34,382
Department of Treasury [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 8,358 9,509
Department of Interior [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 195 2,735
Department of Energy [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 4,626 4,892
Other government [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 6,984 6,889
Total Federal civilian agencies [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer 59,492 58,407
Commercial [Member]
    
Revenue, Major Customer [Line Items]    
Revenue, by customer $ 809 $ 574