Additional acquisition of common stock.

No definition available.

Name:	aht_AdditionalAcquisitionOfCommonStock
Namespace Prefix:	aht_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

At-The-Market Equity Distribution Program, Authorized Amount

+ References

No definition available.

+ Details

Name:	aht_AtTheMarketEquityDistributionProgramAuthorizedAmount
Namespace Prefix:	aht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Increased dividend rate percentage.

+ References

No definition available.

+ Details

Name:	aht_IncreasedDividendRatePercentage
Namespace Prefix:	aht_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Preferred Stock, Conversion Ratio to Common Stock

+ References

No definition available.

+ Details

Name:	aht_PreferredStockConversionRatiotoCommonStock
Namespace Prefix:	aht_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Sale Of Stock, Commission Percentage

+ References

No definition available.

+ Details

Name:	aht_SaleOfStockCommissionPercentage
Namespace Prefix:	aht_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Sale Of Stock, Maximum Amount Receivable On Transaction

+ References

No definition available.

+ Details

Name:	aht_SaleOfStockMaximumAmountReceivableOnTransaction
Namespace Prefix:	aht_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Sale Of Stock, Number Of Shares Authorized In Transaction

+ References

No definition available.

+ Details

Name:	aht_SaleOfStockNumberOfSharesAuthorizedInTransaction
Namespace Prefix:	aht_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Face amount or stated value per share of common stock.

+ References

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount per share used to calculated dividend payments on preferred stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

+ Details

Name:	us-gaap_PreferredStockDividendRatePerDollarAmount
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

+ Details

Name:	us-gaap_PreferredStockDividendRatePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(d))
-URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (h)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21484-112644

+ Details

Name:	us-gaap_PreferredStockLiquidationPreference
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644

+ Details

Name:	us-gaap_PreferredStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 5
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21488-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 11
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21564-112644

+ Details

Name:	us-gaap_PreferredStockRedemptionPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

+ Details

Name:	us-gaap_PreferredStockSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

+ References

+ Details

Name:	us-gaap_PreferredStockSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Per share or per unit amount of equity securities issued.

+ References

No definition available.

+ Details

Name:	us-gaap_SharesIssuedPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_StockRepurchasedDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_SeriesDPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_SeriesFPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_SeriesGPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_SeriesHPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=aht_SeriesIPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=aht_AtTheMarketEquityDistributionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=aht_VirtuAmericasLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=aht_M3ALPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=aht_KeystoneCapitalPartnersLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=aht_YAIIPNLtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=aht_SevenKnotsLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=aht_BRileyPrincipalCapitalLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=aht_FirstLincolnParkPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=aht_SecondLincolnParkPurchaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Equity - Narrative (Details)										12 Months Ended			61 Months Ended
Equity - Narrative (Details)	Sep. 09, 2021 shares	Jul. 02, 2021 shares	Jun. 18, 2021 shares	Jun. 07, 2021 shares	May 17, 2021 shares	Mar. 12, 2021 shares	Jan. 22, 2021 shares	Dec. 07, 2020 shares	Nov. 25, 2020 $ / shares	Dec. 31, 2022 $ / shares shares	Dec. 31, 2021 $ / shares shares	Dec. 31, 2020 shares	Dec. 31, 2022 USD ($) $ / shares shares	Apr. 11, 2022 USD ($)	Apr. 06, 2022 USD ($) $ / shares	Dec. 11, 2017 USD ($)
Class of Stock [Line Items]
Shares issued, price per share (in dollars per share)															$ 0.01
Authorized amount \| $															$ 200,000,000
Stock repurchased (in shares) \| shares										0	0	0
Additional acquisition of common stock (in shares) \| shares										43,007	1,420	3,056
Preferred stock, shares authorized (in shares) \| shares										50,000,000	50,000,000		50,000,000
Preferred stock, par value (in dollars per shares)										$ 0.01	$ 0.01		$ 0.01
Common stock, par value (in dollars per share)									$ 0.01	$ 0.01	$ 0.01		$ 0.01
Preferred Stock, Series D
Class of Stock [Line Items]
Preferred stock percentage										8.45%
Preferred stock, par value (in dollars per shares)									0.01
Preferred stock, shares outstanding (in shares) \| shares										1,174,427	1,174,427		1,174,427
Redemption price of preferred stock (in dollars per share)										$ 25			$ 25
Liquidation preference (in dollars per share)										25.00			$ 25.00
Annual dividend rate per share (in dollars per share)										$ 2.1124
Increased dividend rate percentage										9.45%
Preferred Stock, Series F
Class of Stock [Line Items]
Preferred stock percentage										7.375%
Preferred stock, par value (in dollars per shares)									0.01
Preferred stock, shares outstanding (in shares) \| shares										1,251,044	1,251,044		1,251,044
Redemption price of preferred stock (in dollars per share)										$ 25.00			$ 25.00
Liquidation preference (in dollars per share)										25.00			$ 25.00
Annual dividend rate per share (in dollars per share)										$ 1.8436
Conversion ratio to common stock										0.09690			0.09690
Preferred Stock, Series G
Class of Stock [Line Items]
Preferred stock percentage										7.375%
Preferred stock, par value (in dollars per shares)									$ 0.01
Preferred stock, shares outstanding (in shares) \| shares										1,531,996	1,531,996		1,531,996
Redemption price of preferred stock (in dollars per share)										$ 25.00			$ 25.00
Liquidation preference (in dollars per share)										25.00			$ 25.00
Annual dividend rate per share (in dollars per share)										$ 1.8436
Conversion ratio to common stock										0.08333			0.08333
Preferred Stock, Series H
Class of Stock [Line Items]
Preferred stock percentage									7.50%	7.50%
Preferred stock, par value (in dollars per shares)									$ 0.01
Preferred stock, shares outstanding (in shares) \| shares										1,308,415	1,308,415		1,308,415
Redemption price of preferred stock (in dollars per share)										$ 25.00			$ 25.00
Liquidation preference (in dollars per share)										25.00			$ 25.00
Annual dividend rate per share (in dollars per share)										$ 1.8750
Conversion ratio to common stock										0.08251			0.08251
Preferred Stock, Series I
Class of Stock [Line Items]
Preferred stock percentage									7.50%	7.50%
Preferred stock, par value (in dollars per shares)									$ 0.01
Preferred stock, shares outstanding (in shares) \| shares										1,252,923	1,252,923		1,252,923
Redemption price of preferred stock (in dollars per share)										$ 25.00			$ 25.00
Liquidation preference (in dollars per share)										25.00			$ 25.00
Annual dividend rate per share (in dollars per share)										$ 1.8750
Conversion ratio to common stock										0.08065			0.08065
At-The-Market Equity Distribution \| Virtu Americas LLC
Class of Stock [Line Items]
Aggregate offering price \| $														$ 100,000,000
Private Placement \| M3A LP
Class of Stock [Line Items]
Shares authorized (in shares) \| shares	6,000,000
Private Placement \| Keystone Capital Partners, LLC
Class of Stock [Line Items]
Shares issued (in shares) \| shares					4,000
Shares authorized (in shares) \| shares					3,100,000
Private Placement \| YA II PN, Ltd.
Class of Stock [Line Items]
Shares authorized (in shares) \| shares				3,800,000			1,400,000
Private Placement \| Seven Knots, LLC
Class of Stock [Line Items]
Shares authorized (in shares) \| shares			4,000,000
Private Placement \| B. Riley Principal Capital, LLC
Class of Stock [Line Items]
Shares authorized (in shares) \| shares		4,600,000
Private Placement \| First Lincoln Park Purchase Agreement
Class of Stock [Line Items]
Shares authorized (in shares) \| shares								1,100,000
Private Placement \| Second Lincoln Park Purchase Agreement
Class of Stock [Line Items]
Shares issued (in shares) \| shares						16,000
Shares authorized (in shares) \| shares						2,100,000
Common Stock \| At-The-Market Equity Distribution
Class of Stock [Line Items]
Aggregate offering price \| $																$ 100,000,000
Shares issued (in shares) \| shares													437,000
Sale of stock, consideration received on transaction \| $													$ 27,500,000
Commission percentage														1.00%