2.4.0.80058 - Disclosure - 15. STOCK OPTIONS (Details Narrative)truefalsefalse1false USDfalsefalse$From2011-10-01to2012-09-30http://www.sec.gov/CIK0001074828duration2011-10-01T00:00:002012-09-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDPSharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli0USDUSD$2false USDfalsefalse$From2010-10-01to2011-09-30http://www.sec.gov/CIK0001074828duration2010-10-01T00:00:002011-09-30T00:00:00USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli0USDUSD$3false falsefalseAsOf2010-09-30http://www.sec.gov/CIK0001074828instant2010-09-30T00:00:000001-01-01T00:00:00SharesStandardhttp://www.xbrl.org/2003/instancesharesxbrli01true 1VSUL_StockOptionsDetailsNarrativeAbstractVSUL_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Stock Options Details Narrative2false 2us-gaap_AllocatedShareBasedCompensationExpenseNetOfTaxus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse266172266172USD$falsetruefalse2truefalsefalse153227153227USD$falsetruefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryThe amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.No definition available.false2Share based compensation expense, net of related tax effects3false 2us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumberus-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse59200005920000falsefalsefalse2truefalsefalse69200006920000falsefalsefalse3truefalsefalse47350004735000falsefalsefalsexbrli:sharesItemTypesharesThe number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. false1Options outstanding4false 2us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1us-gaap_truenainstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse0.1310.131USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsenum:perShareItemTypedecimalThe weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 false3Options outstanding, exercise price per share5false 2VSUL_UnrecognizedCostsRelatedToEmployeeGrantedStockOptionsThatAreNotVestedVSUL_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalse1truefalsefalse9618096180USD$falsetruefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryCustom Element.No definition available.false2Unrecognized costs related to employee granted stock options that are not vestedfalse15. 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