XML 103 R88.htm IDEA: XBRL DOCUMENT v3.8.0.1

Use of Special Purpose Entities (SPE) and Variable Interest Entities (VIE) - Classification and Carrying Value of Unconsolidated VIEs (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Variable Interest Entity [Line Items]
Unconsolidated VIE, maximum loss exposure	$ 220,800	$ 185,300
Receivables and other assets	117,822	138,323
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	220,797	185,301
Investment securities available for sale, at fair value, held in securitization trusts | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	47,922	43,897
Receivables and other Assets | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	73	74
Preferred equity and mezzanine loan investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	138,920	100,150
Investment in unconsolidated entities | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	33,882	41,180
Other VIEs, Multi-family CMBS | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	47,995	43,971
Other VIEs, Multi-family CMBS | Investment securities available for sale, at fair value, held in securitization trusts | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	47,922	43,897
Other VIEs, Multi-family CMBS | Receivables and other Assets | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	73	74
Other VIEs, Multi-family CMBS | Preferred equity and mezzanine loan investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Other VIEs, Multi-family CMBS | Investment in unconsolidated entities | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Preferred Equity Investment on Multi-family Properties | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	140,329	100,197
Preferred Equity Investment on Multi-family Properties | Investment securities available for sale, at fair value, held in securitization trusts | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Preferred Equity Investment on Multi-family Properties | Receivables and other Assets | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Preferred Equity Investment on Multi-family Properties | Preferred equity and mezzanine loan investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	132,009	81,269
Preferred Equity Investment on Multi-family Properties | Investment in unconsolidated entities | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	8,320	18,928
Mezzanine/Construction Loan on Multi-family Properties | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	6,911	18,881
Mezzanine/Construction Loan on Multi-family Properties | Investment securities available for sale, at fair value, held in securitization trusts | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Mezzanine/Construction Loan on Multi-family Properties | Receivables and other Assets | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Mezzanine/Construction Loan on Multi-family Properties | Preferred equity and mezzanine loan investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	6,911	18,881
Mezzanine/Construction Loan on Multi-family Properties | Investment in unconsolidated entities | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Equity Investment in Entities that Invest in Multi-family Properties | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	25,562	22,252
Equity Investment in Entities that Invest in Multi-family Properties | Investment securities available for sale, at fair value, held in securitization trusts | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Equity Investment in Entities that Invest in Multi-family Properties | Receivables and other Assets | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Equity Investment in Entities that Invest in Multi-family Properties | Preferred equity and mezzanine loan investments | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	0	0
Equity Investment in Entities that Invest in Multi-family Properties | Investment in unconsolidated entities | Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Investment amount	$ 25,562	$ 22,252

X

- Definition

Carrying amounts of receivables due as of the balance sheet date from parties or arising from transactions not otherwise specified in the taxonomy. Sum of the carrying amount for an unclassified balance sheet date of expenditures made in advance of when the economic benefit of the cost will be realized, and which will be expensed in future periods with the passage of time or when a triggering event occurs and the carrying amount as of the balance sheet date of assets not otherwise specified in the taxonomy. Also includes assets not individually reported in the financial statements, or not separately disclosed in notes.

+ References

No definition available.

+ Details

Name:	nymt_ReceivablesandOtherAssets
Namespace Prefix:	nymt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The item represents the maximum loss exposure on unconsolidated variable interest entities.

+ References

No definition available.

+ Details

Name:	nymt_UnconsolidatedVIEMaximumLossExposure
Namespace Prefix:	nymt_
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_VariableInterestEntityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph a
-URI http://asc.fasb.org/extlink&oid=77990344&loc=d3e5728-111685

+ Details

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

X

- Details

Name:	us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=nymt_InvestmentSecuritiesAvailableforSaleAtFairValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=nymt_ReceivablesAndOtherAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=nymt_MezzanineLoanandPreferredEquityInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=nymt_InvestmentinUnconsolidatedEntitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentAxis=nymt_MulitFamilyCMBSMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentAxis=nymt_PreferredEquityInvestmentonMultifamilyPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentAxis=nymt_MezzanineConstructionLoanonMultifamilyPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentAxis=nymt_EquityInvestmentinEntitiesthatInvestinMultifamilyPropertiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: