Annual report pursuant to Section 13 and 15(d)

Nature of Business and Significant Accounting Policies (Details)

v2.4.0.6
Nature of Business and Significant Accounting Policies (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]                      
Basic weighted average common shares outstanding (in shares)                 5,282,047 5,232,055 5,189,263
Effect of dilutive options (in shares)                 27,815 35,802 29,971
Diluted weighted average shares outstanding (in shares) 5,323,000 5,311,000 5,312,000 5,293,000 5,293,000 5,268,000 5,268,000 5,242,000 5,309,862 5,267,857 5,219,234
Property, Plant and Equipment [Line Items]                      
Number of facilities under capital lease 4               4    
Estimated useful life                 15 years    
Concentration of Credit Risk [Abstract]                      
Percentage of contracts with the government (in hundredths)                 99.00% 99.00% 99.00%
Deferred Compensation Plans [Abstract]                      
Deferred compensation plan expense                 $ 1.2 $ 1.4 $ 1.9
Finite-Lived Intangible Assets [Line Items]                      
Weighted average useful life of intangible assets                 11 years    
Akimeka, LLC [Member]
                      
Finite-Lived Intangible Assets [Line Items]                      
Impairment of intangible assets                 1.0    
ICRC [Member]
                      
Finite-Lived Intangible Assets [Line Items]                      
Impairment of intangible assets                 1.9    
Goodwill impairment                 $ 6    
Contract-related [Member]
                      
Finite-Lived Intangible Assets [Line Items]                      
Useful Life of intangible assets                 5 years    
Weighted average useful life of intangible assets                 11 years 3 months 18 days    
Trade Name [Member]
                      
Finite-Lived Intangible Assets [Line Items]                      
Useful Life of intangible assets                 8 years 9 months 18 days    
Acquired Technologies [Member]
                      
Finite-Lived Intangible Assets [Line Items]                      
Useful Life of intangible assets                 11 years    
Computer Equipment and Furniture [Member] | Minimum [Member]
                      
Property, Plant and Equipment [Line Items]                      
Estimated useful life                 3 years    
Computer Equipment and Furniture [Member] | Maximum [Member]
                      
Property, Plant and Equipment [Line Items]                      
Estimated useful life                 15 years    
Buildings and Land Improvements [Member] | Minimum [Member]
                      
Property, Plant and Equipment [Line Items]                      
Estimated useful life                 15 years    
Buildings and Land Improvements [Member] | Maximum [Member]
                      
Property, Plant and Equipment [Line Items]                      
Estimated useful life                 20 years