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Restricted Cash and Short-Term Investments - Additional Information (Detail) (Restricted cash and short-term investments, USD $)
In Millions, unless otherwise specified
May 03, 2015
Nov. 02, 2014
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted cash $ 12.4us-gaap_RestrictedCashAndCashEquivalents $ 16.5us-gaap_RestrictedCashAndCashEquivalents
Short-term investments 5.3us-gaap_ShortTermInvestments 5.5us-gaap_ShortTermInvestments
Short-Term Credit Facility
   
Restricted Cash and Cash Equivalents Items [Line Items]    
Restricted as collateral $ 0.1us-gaap_CashCollateralForBorrowedSecurities
/ us-gaap_BalanceSheetLocationAxis
= visi_RestrictedCashandShorttermInvestmentsMember
/ us-gaap_CreditFacilityAxis
= visi_LineofCreditandLettersofCreditMember
$ 10.4us-gaap_CashCollateralForBorrowedSecurities
/ us-gaap_BalanceSheetLocationAxis
= visi_RestrictedCashandShorttermInvestmentsMember
/ us-gaap_CreditFacilityAxis
= visi_LineofCreditandLettersofCreditMember