XML 89 R73.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Commitments and Contingencies (Details 2) | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) single_family_property | Dec. 31, 2014 USD ($) single_family_property | Dec. 31, 2013 USD ($)
Commitments and contingencies |  |  |
Number of properties | single_family_property | 38,780 | 34,599 |
Company contributions | $ 500,000 | $ 300,000 | $ 200,000
Commitment to renovate homes |  |  |
Commitments and contingencies |  |  |
Aggregate outstanding commitment | $ 0 | $ 4,100,000 |
Commitment to acquire properties |  |  |
Commitments and contingencies |  |  |
Number of properties | single_family_property | 12 | 703 |
Aggregate purchase price | $ 1,700,000 | $ 110,900,000 |

X
- Definition Aggregate Purchase Price + References No definition available. + Details
Name: | amh_AggregatePurchasePrice
Namespace Prefix: | amh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the amount of outstanding Commitment. + References No definition available. + Details
Name: | amh_OutstandingCommitment
Namespace Prefix: | amh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The increase in the fair value of plan assets from contributions made by the employer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
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_PurchaseCommitmentExcludingLongtermCommitmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis=amh_CommitmentsForRenovationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PurchaseCommitmentExcludingLongtermCommitmentAxis=amh_CommitmentToAcquirePropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |