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Royal Oaks Homes Acquisition - Narrative (Details) (USD $)
12 Months Ended 0 Months Ended 9 Months Ended
Dec. 31, 2014
Mar. 13, 2014
Sep. 30, 2014
Dec. 31, 2013
Business Acquisition [Line Items]        
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual $ 67,300,000us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual      
Potential earn-out 2,404,000us-gaap_BusinessCombinationContingentConsiderationLiability     0us-gaap_BusinessCombinationContingentConsiderationLiability
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Valuation Allowance 100,000avhi_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentValuationAllowance      
Business Acquisition, Goodwill, Expected Tax Deductible Amount 3,700,000us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount      
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual 2,100,000us-gaap_BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual      
Royal Oak LLC and Affiliate [Member]        
Business Acquisition [Line Items]        
Cash payments to acquire businesses   65,000,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
   
Potential earn-out   3,000,000us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
   
Contingent consideration (earn-out) 2,400,000avhi_BusinessCombinationsConsiderationTransferredContingentConsideration
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
2,500,000avhi_BusinessCombinationsConsiderationTransferredContingentConsideration
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
   
Warranty administrative services   200,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContingentLiability
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
   
Warranty period   2 years    
Trade name   614,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
   
Amortization of Intangible Assets 200,000us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
     
Transaction and integration costs     1,057,000us-gaap_BusinessCombinationAcquisitionRelatedCosts
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
 
Royal Oak LLC and Affiliate [Member] | Minimum [Member]        
Business Acquisition [Line Items]        
Performance target to receive earn-out   50.00%avhi_BusinessCombinationPerformanceTargettoReceiveEarnout
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Royal Oak LLC and Affiliate [Member] | Trade Names [Member]        
Business Acquisition [Line Items]        
Trade name   $ 600,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
   
Amortization period   3 years    
Royal Oak LLC and Affiliate [Member] | Lots Owned Or Controlled [Member]        
Business Acquisition [Line Items]        
Number of primary residential lots   2,500us-gaap_NumberOfUnitsInRealEstateProperty
/ us-gaap_BusinessAcquisitionAxis
= avhi_RoyalOakLLCandAffiliateMember
/ us-gaap_RealEstatePropertiesAxis
= avhi_LotsOwnedOrControlledMember