Share-Based Compensation - Noncash Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total noncash share-based compensation expense	$ 6,645	$ 6,473	$ 13,405	$ 14,134
Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold \| Property management expenses
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total noncash share-based compensation expense	1,067	1,137	2,188	2,383
Location, Statement of Income, Balance [Axis]: us-gaap:GeneralAndAdministrativeExpense
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total noncash share-based compensation expense	4,323	3,987	8,768	8,854
Location, Statement of Income, Balance [Axis]: amh:AcquisitionCostBusinessCombinationPropertyAcquisition
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total noncash share-based compensation expense	$ 1,255	$ 1,349	$ 2,449	$ 2,897