XML 30 R24.htm IDEA: XBRL DOCUMENT v2.4.0.6

Long-Term Compensation Plan and Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Long-Term Compensation Plan and Stock Based Compensation [Abstract]

Details of long-term compensation plan and stock-based compensation expense

		Three months ended March 31,
		2013				2012
Restricted stock		$	754			$	849
Long-term compensation plan			—				229
Total Non-Cash Compensation		$	754			$	1,078

X

- Details

Name:	us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Schedule of compensation cost for share-based payment arrangements allocation of share-based compensation costs.

+ References

No definition available.

+ Details

Name:	vdsi_ScheduleOfCompensationCostForShareBasedPaymentArrangementsAllocationOfShareBasedCompensationCostsTableTextBlock
Namespace Prefix:	vdsi_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration