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Indebtedness, net - Schedule of Net Premium (Discount) Amortization Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Interest expense, net of discount amortization	$ (7,142)	$ 154	$ 232

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- Definition

Interest Expense And Amortization Of Discount (Premium) And Loan Costs

+ References

No definition available.

+ Details

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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