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Income Taxes (Detail) (USD $)
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Sep. 30, 2014
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Sep. 30, 2013
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| Income Taxes [Line Items] | ||
| Net operating loss carryforwards | $ 2,731,492us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | $ 1,332,955us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |
| Capitalized expenditures | 381,872arth_DeferredTaxAssetsCapitalizedExpenditures | 0arth_DeferredTaxAssetsCapitalizedExpenditures |
| Research and experimentation credit carryforwards | 63,368us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch | 32,559us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch |
| Stock based compensation | 501,175us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 115,171us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost |
| Fixed assets | 1,568us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsOther | 7,492us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsOther |
| Accrued expenses | 46,230us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities | 35,744us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities |
| Gross deferred tax assets | 3,725,705us-gaap_DeferredTaxAssetsGross | 1,523,921us-gaap_DeferredTaxAssetsGross |
| Deferred tax asset valuation allowance | (3,725,705)us-gaap_DeferredTaxAssetsValuationAllowance | (1,523,921)us-gaap_DeferredTaxAssetsValuationAllowance |
| Net deferred tax assets | $ 0us-gaap_DeferredTaxAssetsLiabilitiesNet | $ 0us-gaap_DeferredTaxAssetsLiabilitiesNet |
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- Definition
Deferred tax assets capitalized expenditures. No definition available.
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- Details
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to other deductible tax credit carryforwards not separately disclosed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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