Subsequent Events - Additional Information (Detail) (Subsequent Event)	0 Months Ended
Jan. 09, 2015	Dec. 12, 2014
Subsequent Event [Line Items]
Common stock repurchase, authorized shares	1,500,000
Period in force	36 months
Short Term Financing Program [Member]
Subsequent Event [Line Items]
Percentage of total eligible receivables, unbilled activity		15.00%
Percentage of total eligible receivables, payment terms 61-95 days		5.00%
Short Term Financing Program [Member] \| Minimum [Member]
Subsequent Event [Line Items]
Payment terms		61 days
Short Term Financing Program [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Payment terms		95 days

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

No definition available.

Name:	us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramPeriodInForce1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Definition

Line of Credit Facilities, Borrowing Capacity, Base, Total Eligible Receivables, 61 to 95 days, Percentage

+ References

No definition available.

+ Details

Name:	visi_LineofCreditFacilitiesBorrowingCapacityBaseTotalEligibleReceivables61to95daysPercentage
Namespace Prefix:	visi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facilities, Borrowing Capacity, Base, Total Eligible Receivables, Payment Terms

+ References

No definition available.

+ Details

Name:	visi_LineofCreditFacilitiesBorrowingCapacityBaseTotalEligibleReceivablesPaymentTerms
Namespace Prefix:	visi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facilities, Borrowing Capacity, Base, Total Eligible Receivables, Unbilled Activity, Percentage

+ References

No definition available.

+ Details

Name:	visi_LineofCreditFacilitiesBorrowingCapacityBaseTotalEligibleReceivablesUnbilledActivityPercentage
Namespace Prefix:	visi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant