XML 98 R88.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Derivative Instruments and Hedging Activities - Interest Rate Swaps (Details) - Derivatives Designated as Hedging Instruments - Cash Flow Hedging - Interest rate swaps - USD ($) | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | $ 345,500,000 | $ 345,500,000
Weighted Average Fixed Interest Rate | 2.33% | 2.33%
Weighted Average Variable Interest Rate | 1.77% | 1.38%
2024 |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | $ 98,000,000 | $ 98,000,000
Weighted Average Fixed Interest Rate | 2.18% | 2.18%
Weighted Average Variable Interest Rate | 1.73% | 1.36%
2027 |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Notional Amount | $ 247,500,000 | $ 247,500,000
Weighted Average Fixed Interest Rate | 2.39% | 2.39%
Weighted Average Variable Interest Rate | 1.79% | 1.39%

X
- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
Name: | invest_DerivativeNotionalAmount
Namespace Prefix: | invest_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Average fixed interest rate related to the group of interest rate derivatives. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageFixedInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Average variable interest rate related to the group of interest rate derivatives. + References No definition available. + Details
Name: | us-gaap_DerivativeAverageVariableInterestRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
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_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis=us-gaap_CashFlowHedgingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | nymt_DerivativeMaturityPeriodsAxis=nymt_DerivativeMaturity2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | nymt_DerivativeMaturityPeriodsAxis=nymt_DerivativeMaturity2027Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |