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Income Tax Reconciliation (Detail) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Reconciliation of Provision of Income Taxes [Line Items]    
Income tax benefit (expense) at the statutory rate $ (21,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate $ (152,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Benefit (expense) resulting from:    
Increase in Federal valuation allowance   152,000us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Utilization of net operating loss carryforwards 21,000aret_IncomeTaxReconciliationUtilizationOfOperatingLossCarryforwards  
Income tax benefit (expense) $ 0us-gaap_IncomeTaxExpenseBenefit $ 0us-gaap_IncomeTaxExpenseBenefit