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Investments in Partnerships and LLCs (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
May 14, 2014
Noncontrolling Interest [Line Items]        
Noncontrolling Interest in Variable Interest Entity     $ 0us-gaap_NoncontrollingInterestInVariableInterestEntity  
Investments in unconsolidated entities 20,094,000us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures   17,991,000us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures  
EM 646 [Member]        
Noncontrolling Interest [Line Items]        
Parent ownership percentage (percent) 58.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= avhi_Em646Member
     
Distribution Made to Partners, Value of Land Distributed       7,100,000avhi_DistributionMadetoPartnersValueofLandDistributed
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= avhi_Em646Member
Investments in unconsolidated entities 18,900,000us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= avhi_Em646Member
     
EM 646 [Member] | Minimum [Member]        
Noncontrolling Interest [Line Items]        
Ownership percentage (percent) 20.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= avhi_Em646Member
     
EM 646 [Member] | Maximum [Member]        
Noncontrolling Interest [Line Items]        
Parent ownership percentage (percent) 58.00%us-gaap_MinorityInterestOwnershipPercentageByParent
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= avhi_Em646Member
     
Variable Interest Entity, Not Primary Beneficiary [Member]        
Noncontrolling Interest [Line Items]        
Contributions to unconsolidated entities 2,100,000us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
0us-gaap_VariableInterestEntityFinancialOrOtherSupportAmount
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
   
AV Homes     $ 18,000,000us-gaap_PartnersCapital
/ us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis
= us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember