Accounts Payable (Details) (USD $) In Thousands	Jul. 29, 2011	Oct. 29, 2010	Jul. 30, 2010
Accounts Payable
Outstanding Checks Included In Trade Accounts Payable	$ 35,343	$ 33,944	$ 25,280

Name:

val_OutstandingChecksIncludedInTradeAccountsPayable

Namespace Prefix:

val

Data Type:

xbrli:monetaryItemType

Balance Type:

credit

Period Type:

instant