Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - (Details)

Commitments and Contingencies - (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Commitments [Abstract]    
Number of bonded projects 2vsec_NumberOfBondedProjects  
Aggregate bonded amount $ 4,000,000us-gaap_LossContingencyEstimateOfPossibleLoss  
Accrued expense related to claims $ 169,000us-gaap_LossContingencyAccrualAtCarryingValue $ 409,000us-gaap_LossContingencyAccrualAtCarryingValue
Contingencies [Abstract]    
Number of subcontractors that operated the facility 1vsec_NumberOfSubcontractorsThatOperatedFacility  
Number of deaths of subcontractor employees 5vsec_NumberOfDeathsOfSubcontractorEmployees  
Number of subcontractors for lawsuits filed 2vsec_NumberOfSubcontractorsForLawsuitsFiled