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18a. INCOME TAXES (Details Narrative) (USD $) | 12 Months Ended
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Sep. 30, 2012
Operating loss before tax | $ 1,522,000
US [Member] |
Operating loss before tax | 11,877,200
Non- US [Member] |
Operating loss before tax | $ 11,877,200

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- Definition Custom Element. + References No definition available. + Details
Name: | VSUL_OperatingLossCarryforward
Namespace Prefix: | VSUL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration