XML 51 R40.htm IDEA: XBRL DOCUMENT
v3.19.3

Real Estate Assets, Net - Additional Information (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2019 USD ($) property | Sep. 30, 2019 USD ($) property | Sep. 30, 2018 USD ($) property | Sep. 30, 2019 USD ($) property | Sep. 30, 2018 USD ($) property | Dec. 31, 2018 USD ($)
Property Subject to or Available for Operating Lease |  |  |  |  |  |
Single-family properties: Net proceeds |  |  |  | $ 151,502 | $ 47,757 |
Note receivable, gross |  | $ 30,700 |  | 30,700 |  |
Unamortized discount |  | 1,200 |  | 1,200 |  |
Secured Promissory Note Maturing June 2025 | Disposal Group, Not Discontinued Operations | Bulk Portfolio Disposition |  |  |  |  |  |
Property Subject to or Available for Operating Lease |  |  |  |  |  |
Note receivable, gross | $ 30,700 |  |  |  |  |
Unamortized discount |  | 1,000 |  | 1,000 |  |
Single Family Homes |  |  |  |  |  |
Property Subject to or Available for Operating Lease |  |  |  |  |  |
Real estate investment properties unrecorded deed |  | 400 |  | 400 |  | $ 5,900
Depreciation expense |  | $ 78,300 | $ 75,200 | $ 233,700 | $ 224,700 |
Single-family properties: Properties sold | property |  | 341 | 95 | 954 | 311 |
Single-family properties: Net proceeds |  | $ 64,014 | $ 17,352 | $ 179,465 | $ 46,994 |
Single-family properties: Net gain on sale |  | 13,506 | 3,458 | 32,655 | 8,816 |
Land: Net proceeds |  | 316 | 263 | 1,511 | 763 |
Land: Net gain on sale |  | $ 15 | $ 82 | $ 240 | $ 220 |
Single Family Homes | Disposal Group, Not Discontinued Operations | Bulk Portfolio Disposition |  |  |  |  |  |
Property Subject to or Available for Operating Lease |  |  |  |  |  |
Single-family properties: Properties sold | property | 215 |  |  |  |  |

X
- Definition Gain (Loss) On Properties Sold, Excluding Joint Venture Properties + References No definition available. + Details
Name: | amh_GainLossOnPropertiesSoldExcludingJointVentureProperties
Namespace Prefix: | amh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Gain (Loss) On Properties Sold, Land + References No definition available. + Details
Name: | amh_GainLossOnPropertiesSoldLand
Namespace Prefix: | amh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Number Of Real Estate Properties Sold + References No definition available. + Details
Name: | amh_NumberOfRealEstatePropertiesSold
Namespace Prefix: | amh_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The value of real estate properties for which the recorded grant deed has not been received. + References No definition available. + Details
Name: | amh_RealEstateInvestmentPropertyUnrecordedDeed
Namespace Prefix: | amh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524 + Details
Name: | us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
Name: | us-gaap_Depreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before allowance for credit loss, of financing receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 + Details
Name: | us-gaap_NotesAndLoansReceivableGrossNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The cash inflow from the sale of land held for investment; excludes sales of land held as inventory or productive use. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfLandHeldforinvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Cash received for the sale of real estate that is not part of an investing activity during the current period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfRealEstate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=amh_SecuredPromissoryNoteMaturingJune2025Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupNotDiscontinuedOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=amh_BulkPortfolioDispositionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=amh_SingleFamilyHomesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |