XML 57 R42.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Deferred Costs and Other Intangibles, Net - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |  |  |
Amortization expense related to deferred leasing costs, in-place leases, trademark and database | $ 2.5 | $ 2.2 | $ 4.7 | $ 5.1
Amortization of deferred financing costs | $ 0.5 | $ 0.4 | $ 1.0 | $ 0.8

X
- Definition Amortization Of Deferred Financing Costs. + References No definition available. + Details
Name: | amh_AmortizationOfDeferredFinancingCosts
Namespace Prefix: | amh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate amount of amortization of intangible assets and deferred leasing fees. + References No definition available. + Details
Name: | amh_AmortizationOfIntangibleAssetsAndDeferredLeasingFees
Namespace Prefix: | amh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DeferredCostsCapitalizedPrepaidAndOtherAssetsDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration