XML 39 R88.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Commitments and Contingencies, Litigation (Details) $ in Millions		1 Months Ended		12 Months Ended
	Jun. 15, 2011 USD ($) lawsuit defendant	Jun. 30, 2013 USD ($) lawsuit individual defendant item	Jun. 30, 2011 lawsuit individual defendant item	Dec. 31, 2018 USD ($)
Arbor ESH II, LLC
Litigation
Investments in the Series A1 Preferred Units of a holding company of Extended Stay, Inc. | $	$ 115.0
Lawsuits filed by Extended Stay Litigation Trust (the Trust)
Litigation
Number of lawsuits or complaints filed			3
Number of lawsuits filed in United States Bankruptcy Court			2
Number of defendants | defendant			73
Number of defendants who are corporate and partnership entities | item			55
Number of defendants named in a legal action who are individuals | individual			18
Lawsuits filed by Extended Stay Litigation Trust (the Trust) | Fiduciary Duty Claims
Litigation
Number of lawsuits or complaints filed	2
Number of defendants | defendant	2
Lawsuits filed by Extended Stay Litigation Trust (the Trust) | Motion to amend the lawsuits
Litigation
Number of lawsuits consolidated		1
Number of defendants removed due to consolidation of lawsuits | defendant		47
Number of defendants related to the entity | defendant		0
Number of defendants remaining due to consolidation of lawsuits | defendant		26
Number of defendants who are corporate and partnership entities | item		16
Number of defendants named in a legal action who are individuals | individual		10
Number of lawsuits before amendment		100
Number of lawsuits after amendment		17
Aggregate amount which the Trust would be seeking from the affiliates of the entity | $		$ 139.0
Litigation related to prior structured finance investment
Litigation
Net proceeds received | $				$ 10.2

X

- Definition

Represents the information pertaining to the investment in the Series A1 preferred units of a holding company of Extended Stay, Inc.

+ References

No definition available.

+ Details

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

X

- Definition

Represents related to the Company number of defendants related to the entity.

+ References

No definition available.

+ Details

Name:	abr_LossContingencyNumberOfDefendantsRelatedToCompany
Namespace Prefix:	abr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of defendants removed due to consolidation of lawsuits.

+ References

No definition available.

+ Details

Name:	abr_LossContingencyNumberOfDefendantsRemovedDueToConsolidationOfLawsuits
Namespace Prefix:	abr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of defendants named in a legal action who are corporate and partnership entities.

+ References

No definition available.

+ Details

Name:	abr_LossContingencyNumberOfDefendantsWhoAreCorporateAndPartnershipEntities
Namespace Prefix:	abr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of defendants named in a legal action who are individuals.

+ References

No definition available.

+ Details

Name:	abr_LossContingencyNumberOfDefendantsWhoAreIndividuals
Namespace Prefix:	abr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of lawsuits consolidated.

+ References

No definition available.

+ Details

Name:	abr_LossContingencyNumberOfLawsuitConsolidated
Namespace Prefix:	abr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of lawsuits after amendment.

+ References

No definition available.

+ Details

Name:	abr_LossContingencyNumberOfLawsuitsAfterConsolidationOfLawsuit
Namespace Prefix:	abr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of lawsuits before amendment.

+ References

No definition available.

+ Details

Name:	abr_LossContingencyNumberOfLawsuitsBeforeConsolidationOfLawsuit
Namespace Prefix:	abr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The total number of new claims filed pertaining to a loss contingency in the United states Bankruptcy Court during the period.

+ References

No definition available.

+ Details

Name:	abr_LossContingencyNumberOfNewClaimsFiledInUnitedStatesBankruptcyCourt
Namespace Prefix:	abr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the number of defendants remaining due to consolidation of lawsuits.

+ References

No definition available.

+ Details

Name:	abr_LossContingencyNumberOfRemainingDefendantsDueToConsolidationOfLawsuits
Namespace Prefix:	abr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the aggregate amount which the Trust would be seeking from the affiliates of the entity If the amended complaint is filed.

+ References

No definition available.

+ Details

Name:	abr_LossContingencySeekingOfAmountsFromAffiliatesOfEntity
Namespace Prefix:	abr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount awarded from other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmountAwardedFromOtherParty
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

No definition available.

+ Details

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

X

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

+ Details

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of defendants named in a legal action.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingencyNumberOfDefendants
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=abr_ArborESHIILLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_LitigationCaseAxis=abr_LawsuitFiledByExtendedStayLitigationTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=abr_FiduciaryDutyClaimsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=abr_MotionToAmendmentLawsuitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_LitigationCaseAxis=abr_LitigationRelatedToPriorStructuredFinanceInvestmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: