Debt Instrument, Covenant, Net Worth Threshold

No definition available.

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Namespace Prefix:	ari_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Covenant, Unencumbered Liquidity, Threshold

+ References

No definition available.

+ Details

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Namespace Prefix:	ari_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt related to real estate owned held for investment gross of deferred financing costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	ari_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Option To Extend, Period

+ References

No definition available.

+ Details

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Namespace Prefix:	ari_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Interest Rate, Stated Percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	ari_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Real Estate Owned, Operating Costs and Expenses

+ References

No definition available.

+ Details

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Namespace Prefix:	ari_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Indicates type of variable interest rate on debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 470
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477734/942-470-50-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 976
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477332/976-310-50-1

+ Details

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

- Definition

Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

+ Details

Name:	us-gaap_RepaymentsOfDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue that is not accounted for under Topic 606.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_RevenueNotFromContractWithCustomer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ari_HotelWashingtonD.C.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=ari_SubordinateMortgagePortfolioSegmentMember
Namespace Prefix:
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Period Type:

Real Estate Owned - D.C. Hotel - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2026	Jun. 30, 2025
Real Estate [Line Items]
Debt instrument, covenant, unencumbered liquidity, threshold	$ 50,000			$ 50,000
Debt instrument, covenant, net worth threshold	600,000			600,000
Revenue from the hotel's operations	8,530	$ 4,188		8,898	$ 7,296
Operating expense	23,081	21,113		$ 41,299	41,880
Repayments of mortgage loan	73,700
Letter of Credit
Real Estate [Line Items]
Line of credit facility, option to extend, period				1 year
Hotel - Washington D.C.
Real Estate [Line Items]
Interest rate for repurchase facility			3.00%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]			Secured Overnight Financing Rate [Member]
Debt instrument, covenant, unencumbered liquidity, threshold			$ 10,000
Debt instrument, covenant, net worth threshold			200,000
Revenue from the hotel's operations	23,600	20,100		$ 37,800	38,800
Operating expense	15,500	$ 15,400		$ 28,000	$ 30,300
Repayments of mortgage loan	$ 73,700
Hotel - Washington D.C. \| Subordinate Mortgage Portfolio Segment
Real Estate [Line Items]
Debt related to real estate owned, held for investment, gross of deferred financing costs			$ 73,700
Hotel - Washington D.C. \| Letter of Credit
Real Estate [Line Items]
Line of credit facility, option to extend, period			1 year