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Indebtedness, net - Schedule of Net Premium (Discount) Amortization Recognized (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Debt Disclosure [Abstract] |  |
Interest expense, net of discount amortization | $ (2,698) | $ (2,465)

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- Definition Interest Expense And Amortization Of Discount (Premium) And Loan Costs + References No definition available. + Details
Name: | aht_InterestExpenseAndAmortizationOfDiscountPremiumAndLoanCosts
Namespace Prefix: | aht_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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