Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v2.4.1.9
Subsequent Events (Details) (USD $)
0 Months Ended
Jan. 28, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Subsequent Event [Line Items]        
Aggregate cash purchase price for the acquisition (percent) 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired      
Maximum potential cash payment $ 45,000,000vsec_MaximumPotentialCashPayment      
Fair value adjustments to intangible assets:        
Excess of purchase price over net assets acquired, allocated to intangibles and goodwill   92,052,000us-gaap_Goodwill 92,052,000us-gaap_Goodwill 92,052,000us-gaap_Goodwill
Subsequent Event [Member] | VSE Aviation, Inc [Member]        
Subsequent Event [Line Items]        
Tangible assets acquired 80,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
/ us-gaap_BusinessAcquisitionAxis
= vsec_VSEAviationIncMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Liabilities assumed 12,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
/ us-gaap_BusinessAcquisitionAxis
= vsec_VSEAviationIncMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Identifiable net assets acquired 68,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= vsec_VSEAviationIncMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Fair value adjustments to intangible assets:        
Cash paid 189,000,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= vsec_VSEAviationIncMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Less identifiable net assets acquired (68,000,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= vsec_VSEAviationIncMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Excess of purchase price over net assets acquired, allocated to intangibles and goodwill $ 121,000,000us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= vsec_VSEAviationIncMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember