XML 71 R57.htm IDEA: XBRL DOCUMENT v3.24.0.1

Loans and Investments - Non-performing loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
UPB	$ 427,929	$ 157,960
Loans and investments, gross	12,615,006	14,456,123
Non-performing loans
Financing Receivable, Past Due [Line Items]
UPB	274,152	7,750
Less Than 90 Days Past Due | Non-performing loans
Financing Receivable, Past Due [Line Items]
Loans and investments, gross	0	0
Greater Than 90 Days Past Due | Non-performing loans
Financing Receivable, Past Due [Line Items]
Loans and investments, gross	274,152	7,750
Multifamily
Financing Receivable, Past Due [Line Items]
UPB	272,493
Multifamily | Non-performing loans
Financing Receivable, Past Due [Line Items]
UPB	271,532	2,605
Multifamily | Less Than 90 Days Past Due | Non-performing loans
Financing Receivable, Past Due [Line Items]
Loans and investments, gross	0	0
Multifamily | Greater Than 90 Days Past Due | Non-performing loans
Financing Receivable, Past Due [Line Items]
Loans and investments, gross	271,532	2,605
Commercial
Financing Receivable, Past Due [Line Items]
UPB	1,700	1,700
Commercial | Non-performing loans
Financing Receivable, Past Due [Line Items]
UPB	1,700	1,700
Commercial | Less Than 90 Days Past Due | Non-performing loans
Financing Receivable, Past Due [Line Items]
Loans and investments, gross	0	0
Commercial | Greater Than 90 Days Past Due | Non-performing loans
Financing Receivable, Past Due [Line Items]
Loans and investments, gross	1,700	1,700
Retail
Financing Receivable, Past Due [Line Items]
UPB	19,521	22,045
Retail | Non-performing loans
Financing Receivable, Past Due [Line Items]
UPB	920	3,445
Retail | Less Than 90 Days Past Due | Non-performing loans
Financing Receivable, Past Due [Line Items]
Loans and investments, gross	0	0
Retail | Greater Than 90 Days Past Due | Non-performing loans
Financing Receivable, Past Due [Line Items]
Loans and investments, gross	$ 920	$ 3,445

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

+ Details

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

X

- Definition

Amount at par value of financing receivable purchased with credit deterioration.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 19
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-19

+ Details

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

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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 80
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-80

+ Details

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

X

- Details

Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=abr_FinancingReceivablesLessThan90DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_MultifamilyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_RetailSiteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: