XML 79 R61.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Income Taxes - Tax Reform (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Tax reform |  |  |  |  |
Statutory tax rate |  |  | 35.00% | 34.00% | 34.00%
Undistributed earnings and profits subject to repatriation tax |  | $ 187 | $ 187 |  |
Income tax expense on foreign earnings deemed repatriated |  |  | 18,246 |  |
Tax liability for repatriation tax |  | $ 14,436 | 14,436 |  |
Repatriation tax, period for payment |  | 8 years |  |  |
Deferred tax expense for foreign taxes on distributions from foreign subsidiaries deemed repatriated |  | $ 7,281 |  |  |
Provisional tax expense for remeasurement of net deferred tax assets |  |  | $ 2,339 |  |
Forecast |  |  |  |  |
Tax reform |  |  |  |  |
Statutory tax rate | 21.00% |  |  |  |

X
- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
Name: | us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | vdsi_IncomeTaxDisclosuresLineItems
Namespace Prefix: | vdsi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of reasonable estimate for income tax expense for remeasurement of deferred tax asset from change in tax rate pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. + References No definition available. + Details
Name: | vdsi_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense
Namespace Prefix: | vdsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of reasonable estimate for undistributed accumulated earnings of foreign subsidiary intended to be permanently reinvested outside country of domicile for which accounting for tax effect is incomplete pursuant to Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
Name: | vdsi_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalUndistributedAccumulatedEarningsOfForeignSubsidiary
Namespace Prefix: | vdsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of reasonable estimate for income tax expense from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. + References No definition available. + Details
Name: | vdsi_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense
Namespace Prefix: | vdsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of reasonable estimate for deferred income tax expense from transition tax on distributions from foreign subsidiaries deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017 for which accounting for tax effect is incomplete. + References No definition available. + Details
Name: | vdsi_TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForDistributionsFromForeignSubsidiariesProvisionalDeferredIncomeTaxExpense
Namespace Prefix: | vdsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of tax liability from transition tax on accumulated earnings of controlled foreign corporation deemed repatriated pursuant to Tax Cuts and Jobs Act of 2017. + References No definition available. + Details
Name: | vdsi_TaxCutsAndJobsActOf2017TransitionTaxForAccumulatedForeignEarningsLiability
Namespace Prefix: | vdsi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Period of time over which TCJA transition tax on certain unrepatriated earnings of foreign subsidiaries may be paid. + References No definition available. + Details
Name: | vdsi_TaxCutsAndJobsActOf2017TransitionTaxPeriodForPayment
Namespace Prefix: | vdsi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |