401(k) Plan and Profit Sharing Plan (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
Vesting period for profit sharing | 2 years | ||
401(k) [Member] | |||
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
Defined contribution plan expense |
$ 4,000us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember |
$ 3,700us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember |
$ 4,900us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_UnitedStatesPostretirementBenefitPlansOfUSEntityDefinedBenefitMember |
Profit Sharing Plan [Member] | |||
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
Defined contribution plan expense |
$ 190us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = vsec_ProfitSharingPlanMember |
$ 175us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = vsec_ProfitSharingPlanMember |
$ 217us-gaap_DefinedContributionPlanCostRecognized / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = vsec_ProfitSharingPlanMember |
X | ||||||||||
- Details
|
X | ||||||||||
- Definition
The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|