XML 97 R86.htm IDEA: XBRL DOCUMENT v3.21.1

Credit Enhancement Receivable, Credit Enhancement Deposit and Contingent Liability (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Credit Enhancement Receivable Contingent Liability And Credit Enhancement Deposit
Credit risk loans	$ 24,599,846		$ 24,048,754
Credit Risk
Credit Enhancement Receivable Contingent Liability And Credit Enhancement Deposit
Maximum DB Cayman credit protection	0		18,689
DB Cayman | Credit Risk
Credit Enhancement Receivable Contingent Liability And Credit Enhancement Deposit
Credit risk loans	7,351,405		$ 7,172,509
Maximum DB Cayman credit protection	0	$ 6,230
Maximum loss exposure without any form of credit protection	$ 7,351,405	$ 7,166,279

X

- Definition

Concentration risk credit risk financial instrument maximum exposure without credit protection.

+ References

No definition available.

+ Details

Name:	nmrk_ConcentrationRiskCreditRiskFinancialInstrumentMaximumExposureWithoutCreditProtection
Namespace Prefix:	nmrk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Credit enhancement receivable contingent liability and credit enhancement deposit.

+ References

No definition available.

+ Details

Name:	nmrk_CreditEnhancementReceivableContingentLiabilityAndCreditEnhancementDepositLineItems
Namespace Prefix:	nmrk_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13537-108611

+ Details

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

X

- Definition

This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

+ Details

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

X

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

+ Details

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

X

- Details

Name:	us-gaap_ManagingRisksInherentInServicingAssetsAndServicingLiabilitiesByTypeOfRiskAxis=us-gaap_CreditRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

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