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v2.4.1.9

Subsequent events (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 1 Months Ended | 0 Months Ended |
--- | --- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Apr. 30, 2015 property | May 07, 2015 | Apr. 30, 2015 | Dec. 31, 2014
Subsequent Event |  |  |  |  |  |
Aggregate purchase price of properties acquired | $ 292,735 us-gaap_PaymentsToAcquireResidentialRealEstate | $ 341,064 us-gaap_PaymentsToAcquireResidentialRealEstate |  |  |  |
Credit facility, additional borrowings, amount | 346,000 us-gaap_ProceedsFromLinesOfCredit | 321,000 us-gaap_ProceedsFromLinesOfCredit |  |  |  |
Credit facility, repayment, amount | 508,000 us-gaap_RepaymentsOfLinesOfCredit | 25,000 us-gaap_RepaymentsOfLinesOfCredit |  |  |  |
Total debt | 45,000 us-gaap_LineOfCredit |  |  |  |  | 207,000 us-gaap_LineOfCredit
Subsequent Events | Subsequent acquisitions |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |
Number of properties acquired |  |  | 213 amh_NumberOfRealEstatePropertiesAcquired / us-gaap_BusinessAcquisitionAxis = amh_SubsequentAcquisitionMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  | 213 amh_NumberOfRealEstatePropertiesAcquired / us-gaap_BusinessAcquisitionAxis = amh_SubsequentAcquisitionMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
Aggregate purchase price of properties acquired |  |  | 28,400 us-gaap_PaymentsToAcquireResidentialRealEstate / us-gaap_BusinessAcquisitionAxis = amh_SubsequentAcquisitionMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |  |
Subsequent Events | 5.50% Series C participating preferred shares |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |
Quarterly dividend (in dollars per share) |  |  |  | $ 0.34375 us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = amh_SeriesCParticipatingPreferredStock5.5PercentMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Rate of Preferred units |  |  |  | 5.50%amh_DividendRateForPreferredUnits / us-gaap_StatementClassOfStockAxis = amh_SeriesCParticipatingPreferredStock5.5PercentMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Subsequent Events | Class A common shares |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |
Quarterly dividend (in dollars per share) |  |  |  |  | $ 0.05 us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |
Subsequent Events | Class B common shares |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |
Quarterly dividend (in dollars per share) |  |  |  | $ 0.05 us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Subsequent Events | Series A Preferred Stock |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |
Quarterly dividend (in dollars per share) |  |  |  | $ 0.3125 us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesAPreferredStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Subsequent Events | Series B Preferred Stock |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |
Quarterly dividend (in dollars per share) |  |  |  | $ 0.3125 us-gaap_CommonStockDividendsPerShareDeclared / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Rate of Preferred units |  |  |  | 5.00%amh_DividendRateForPreferredUnits / us-gaap_StatementClassOfStockAxis = us-gaap_SeriesBPreferredStockMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |
Subsequent Events | Senior Secured Revolving Credit Facility |  |  |  |  |  |
Subsequent Event |  |  |  |  |  |
Credit facility, additional borrowings, amount |  |  | 89,000 us-gaap_ProceedsFromLinesOfCredit / us-gaap_CreditFacilityAxis = amh_SeniorSecuredRevolvingCreditFacilityMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |  |
Credit facility, repayment, amount |  |  | 40,000 us-gaap_RepaymentsOfLinesOfCredit / us-gaap_CreditFacilityAxis = amh_SeniorSecuredRevolvingCreditFacilityMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  |  |
Total debt |  |  | $ 94,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = amh_SeniorSecuredRevolvingCreditFacilityMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |  | $ 94,000 us-gaap_LineOfCredit / us-gaap_CreditFacilityAxis = amh_SeniorSecuredRevolvingCreditFacilityMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember |

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- Definition Number Of Real Estate Properties Acquired + References No definition available. + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: 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 + Details
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- Definition The cash outflow from the acquisition of residential property intended to generate income for the owner. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph f -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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