XML 77 R67.htm IDEA: XBRL DOCUMENT v3.25.1

Investments in Equity Affiliates - Summary of Equity Method Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Investment in Equity Affiliates
Investment in Equity Affiliates	$ 77,095	$ 76,312
UPB of Loans to Equity Affiliates	167,050
Arbor Residential Investor LLC
Investment in Equity Affiliates
Investment in Equity Affiliates	21,990	23,868
UPB of Loans to Equity Affiliates	0
Fifth Wall Ventures
Investment in Equity Affiliates
Investment in Equity Affiliates	15,794	14,490
UPB of Loans to Equity Affiliates	0
AMAC Holdings III LLC
Investment in Equity Affiliates
Investment in Equity Affiliates	15,370	15,413
UPB of Loans to Equity Affiliates	35,067
AWC Real Estate Opportunity Partners I LP
Investment in Equity Affiliates
Investment in Equity Affiliates	14,877	13,562
UPB of Loans to Equity Affiliates	108,450
ARSR DPREF I LLC
Investment in Equity Affiliates
Investment in Equity Affiliates	5,698	5,603
UPB of Loans to Equity Affiliates	0
Lightstone Value Plus REIT L.P.
Investment in Equity Affiliates
Investment in Equity Affiliates	1,895	1,895
UPB of Loans to Equity Affiliates	0
The Park at Via Terrossa
Investment in Equity Affiliates
Investment in Equity Affiliates	596	606
UPB of Loans to Equity Affiliates	21,845
Docsumo Pte. Ltd.
Investment in Equity Affiliates
Investment in Equity Affiliates	450	450
UPB of Loans to Equity Affiliates	0
JT Prime
Investment in Equity Affiliates
Investment in Equity Affiliates	425	425
UPB of Loans to Equity Affiliates	0
West Shore Café
Investment in Equity Affiliates
Investment in Equity Affiliates	0	0
UPB of Loans to Equity Affiliates	1,688
Lexford Portfolio
Investment in Equity Affiliates
Investment in Equity Affiliates	0	0
UPB of Loans to Equity Affiliates	0
East River Portfolio
Investment in Equity Affiliates
Investment in Equity Affiliates	0	$ 0
UPB of Loans to Equity Affiliates	$ 0

X

- Definition

Amount of outstanding principal on mortgage loans due from an entity that is affiliated with the reporting entity by means of direct or indirect ownership.

+ References

No definition available.

+ Details

Name:	abr_AffiliatesDebtInstrumentPrincipalOutstanding
Namespace Prefix:	abr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of investment in equity method investee and investment in and advance to affiliate.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(18))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

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

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_ArborResidentialInvestorLLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_FifthWallVenturesIiiMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_AmacHoldingsIiiLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_AWCRealEstateOpportunityPartnersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_ARSRDPREFMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_LightstoneValuePlusREITLPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_TheParkAtViaTerrossaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_DocsumoPte.LtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_JTPrimeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_WestShoreCafeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_LexfordPortfolioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=abr_EastRiverMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: