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Income Taxes (Narrative) (Details) (USD $)
 12 Months Ended 24 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Increase in deferred tax assets $ 200,000altv_DeferredTaxAssetIncreaseDecrease $ 900,000altv_DeferredTaxAssetIncreaseDecrease  
Statutory federal income tax rate 34.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate    
Unrecognized tax benefits 0us-gaap_UnrecognizedTaxBenefits   0us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits, interest expense     0us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
State operating loss carryforwards $ 21,800,000us-gaap_OperatingLossCarryforwards   $ 21,800,000us-gaap_OperatingLossCarryforwards
Period of time after formal notification 1 year    
Maximum [Member]      
Period of tax return examination 5 years    
Minimum [Member]      
Period of tax return examination 3 years