The cash outflow for contingent consideration obligations associated with business combinations.

No definition available.

Name:	avhi_PaymentsForContingentConsiderationObligations
Namespace Prefix:	avhi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

+ Details

Name:	us-gaap_BusinessCombinationContingentConsiderationLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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_FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_ContingentConsiderationByTypeAxis=avhi_EarnOutMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=avhi_Corporate750SeniorConvertibleNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=avhi_EightPointFivePercentSeniorNotesDueTwentyNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=avhi_A6.00SeniorConvertibleNotesDue2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=avhi_SeniorCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Fair Value Disclosures (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Fair Value Disclosures (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Jun. 23, 2015	Jun. 30, 2014	Feb. 04, 2011
Fair Value Disclosures
Change in fair value of contingent consideration		$ (422)	$ (298)
Earn-out
Fair Value Disclosures
Cash paid for earn-outs		$ 4,300
Change in fair value of contingent consideration	$ (400)
7.50% Senior Convertible Notes due 2016
Fair Value Disclosures
Stated interest rate (percent)	7.50%	7.50%		7.50%
8.5% Senior Notes Due 2019
Fair Value Disclosures
Stated interest rate (percent)	8.50%	8.50%		8.50%
6.00% Senior Convertible Notes Due 2020
Fair Value Disclosures
Stated interest rate (percent)	6.00%	6.00%		6.00%
Carrying Amount \| Earn-out
Fair Value Disclosures
Contingent consideration (earn-out)	$ 2,400	$ 2,400		$ 7,083
Fair Value \| Level 3 \| Earn-out
Fair Value Disclosures
Contingent consideration (earn-out)	2,400	2,400		7,083
Senior Notes \| 7.50% Senior Convertible Notes due 2016
Fair Value Disclosures
Stated interest rate (percent)							7.50%
Senior Notes \| 8.5% Senior Notes Due 2019
Fair Value Disclosures
Stated interest rate (percent)						8.50%
Senior Notes \| 6.00% Senior Convertible Notes Due 2020
Fair Value Disclosures
Stated interest rate (percent)					6.00%
Senior Notes \| Carrying Amount \| 7.50% Senior Convertible Notes due 2016
Fair Value Disclosures
Debt				46,793
Senior Notes \| Carrying Amount \| 8.5% Senior Notes Due 2019
Fair Value Disclosures
Debt	196,460	196,460		195,495
Senior Notes \| Carrying Amount \| 6.00% Senior Convertible Notes Due 2020
Fair Value Disclosures
Debt	78,798	78,798		78,558
Senior Notes \| Fair Value \| Level 2 \| 7.50% Senior Convertible Notes due 2016
Fair Value Disclosures
Debt				45,389
Senior Notes \| Fair Value \| Level 2 \| 8.5% Senior Notes Due 2019
Fair Value Disclosures
Debt	208,360	208,360		199,000
Senior Notes \| Fair Value \| Level 2 \| 6.00% Senior Convertible Notes Due 2020
Fair Value Disclosures
Debt	86,840	86,840		75,368
Senior Secured Credit Facility \| Carrying Amount
Fair Value Disclosures
Debt	15,000	15,000		0
Senior Secured Credit Facility \| Fair Value
Fair Value Disclosures
Debt	$ 15,000	$ 15,000		$ 0