v3.8.0.1

Debt - Senior Secured and Senior Unsecured Credit Facility (Details) - USD ($) $ in Thousands | May 18, 2017 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Debt |  |  |
Borrowings outstanding |  | $ 480,000 | $ 280,000
Net proceeds of equity offerings (percent) | 50.00% |  |
Senior Unsecured Credit Facility |  |  |
Debt |  |  |
Maximum borrowing capacity | $ 155,000 | $ 155,000 |
Conditional maximum borrowing capacity | $ 250,000 |  |
Letter of credit borrowing percentage | 50.00% |  |
Unrestricted cash in the borrowing base (percent) | 100.00% |  |
Commitment fee (percent) | 0.50% |  |
Leverage ratio | 60 |  |
Interest coverage ratio | 1.50 |  |
Tangible net worth | $ 325,100 |  |
Net income percentage | 50.00% |  |
Senior Unsecured Credit Facility | LIBOR |  |  |
Debt |  |  |
Variable rate (percent) | 3.25% |  |
Senior Unsecured Credit Facility | Prime Rate |  |  |
Debt |  |  |
Variable rate (percent) | 2.25% |  |
Senior Unsecured Credit Facility | Property under contract or construction |  |  |
Debt |  |  |
Book value included in the borrowing base (percent) | 85.00% |  |
Senior Unsecured Credit Facility | Finished lots and lots under development |  |  |
Debt |  |  |
Book value included in the borrowing base (percent) | 65.00% |  |
Senior Unsecured Credit Facility | Entitled lands |  |  |
Debt |  |  |
Book value included in the borrowing base (percent) | 50.00% |  |

X
- Definition Represents the percentage of equity offerings. + References No definition available. + Details
Name: | avhi_EquityOfferingProceedsPercentage
Namespace Prefix: | avhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the minimum interest coverage ratio as defined by the credit facility agreement. + References No definition available. + Details
Name: | avhi_InterestCoverageRatio
Namespace Prefix: | avhi_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line Of Credit Facility, Conditional Maximum Borrowing Capacity + References No definition available. + Details
Name: | avhi_LineOfCreditFacilityConditionalMaximumBorrowingCapacity
Namespace Prefix: | avhi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum borrowing percentage for letters of credits under the credit facility. + References No definition available. + Details
Name: | avhi_LineOfCreditFacilityLetterOfCreditMaximumBorrowingPercentage
Namespace Prefix: | avhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the cumulative consolidated percentage of net income. + References No definition available. + Details
Name: | avhi_NetIncomePercentage
Namespace Prefix: | avhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The percentage of the book value of an asset that is included in the borrowing base. + References No definition available. + Details
Name: | avhi_PercentOfBookValueIncludedInBorrowingBase
Namespace Prefix: | avhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the percentage of unrestricted cash included in the borrowing base. + References No definition available. + Details
Name: | avhi_PercentOfUnrestrictedCashIncludedInBorrowingBase
Namespace Prefix: | avhi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Indebtedness divided by net capital. + References No definition available. + Details
Name: | us-gaap_RatioOfIndebtednessToNetCapital1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition The minimum amount of tangible capital required under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84167132&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84167132&loc=SL5958568-112826 + Details
Name: | us-gaap_TangibleCapitalRequiredForCapitalAdequacy
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=avhi_SeniorUnsecuredCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=avhi_PropertyUnderContractOrConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=avhi_FinishedLotsAndLotsUnderDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=avhi_EntitledLandsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |