XML 53 R41.htm IDEA: XBRL DOCUMENT
v3.6.0.2

RENTAL PROPERTIES (Hamilton Green) (Details) |  |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 03, 2016 USD ($) | Sep. 18, 2015 USD ($) item | Mar. 02, 2005 USD ($) | Aug. 31, 2004 USD ($) | Aug. 31, 2014 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 item
RENTAL PROPERTIES |  |  |  |  |  |  |  |
Number of units | item |  |  |  |  |  |  |  | 1,033
Gain on sale of real estate |  |  |  |  |  | $ (104,443) |  |
Hamilton Green |  |  |  |  |  |  |  |
RENTAL PROPERTIES |  |  |  |  |  |  |  |
Sales price of real estate properties | $ 1,000,000 |  |  |  |  | $ 1,000,000 |  |
Gain on sale of real estate | 103,793 |  |  |  |  |  |  |
Closing costs | 227,663 |  |  |  |  |  |  |
Cost basis of the property | (668,544) |  |  |  |  |  |  |
Prepayment penalty | $ 187,905 |  |  |  |  |  |  |
Residences at Captain Parkers LLC Residential Apartments Lexington, Massachusetts |  |  |  |  |  |  |  |
RENTAL PROPERTIES |  |  |  |  |  |  |  |
Number of units | item |  | 94 |  |  |  |  |  |
Purchase price of real estate properties |  | $ 31,600,000 |  |  |  |  |  |
Purchase price allocated to the value of the in-place leases |  | 474,000 |  |  |  |  |  |
Purchase price allocated to the value of the tenant relationships |  | $ 31,000 |  |  |  |  |  |
Amortization period of value of the in-place leases |  | 12 months |  |  |  |  |  |
Amortization period of value of the tenant relationships |  | 24 months |  |  |  |  |  |
Closing costs |  | $ 49,000 |  |  |  |  |  |
Hamilton on Main Apts |  |  |  |  |  |  |  |
RENTAL PROPERTIES |  |  |  |  |  |  |  |
Purchase price of real estate properties |  |  |  | $ 56,000,000 |  |  |  |
Hamilton 1025 |  |  |  |  |  |  |  |
RENTAL PROPERTIES |  |  |  |  |  |  |  |
Purchase price of real estate properties |  |  | $ 23,750,000 |  |  |  |  |
Mortgage, 4.34%, August 2014 | Hamilton on Main Apts |  |  |  |  |  |  |  |
RENTAL PROPERTIES |  |  |  |  |  |  |  |
Closing costs |  |  |  |  |  |  | $ 161,000 |
Term of debt |  |  |  |  | 10 years |  |  |
Mortgage amount |  |  |  |  | $ 16,900,000 |  |  |
Interest rate (as a percent) |  |  |  |  | 4.34% |  |  |

X
- Definition Represents the closing costs associated with the transaction. + References No definition available. + Details
Name: | nen_ClosingCosts
Namespace Prefix: | nen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the carrying value of the property. + References No definition available. + Details
Name: | nen_CostBasisOfProperty
Namespace Prefix: | nen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the penalty amount for early repayment of debt. + References No definition available. + Details
Name: | nen_PrepaymentPenalty
Namespace Prefix: | nen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amortization period of value of the in-place leases. + References No definition available. + Details
Name: | nen_RealEstatePropertyLeaseAmortizationTerm
Namespace Prefix: | nen_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the aggregate purchase price of real estate properties acquired by the entity. + References No definition available. + Details
Name: | nen_RealEstatePropertyPurchasePrice
Namespace Prefix: | nen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the aggregate purchase price of real estate properties acquired by the entity allocated to leases. + References No definition available. + Details
Name: | nen_RealEstatePropertyPurchasePriceAllocationLease
Namespace Prefix: | nen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the aggregate purchase price of real estate properties acquired by the entity allocated to tenant relationships. + References No definition available. + Details
Name: | nen_RealEstatePropertyPurchasePriceAllocationTenantRelationships
Namespace Prefix: | nen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the aggregate sales price of real estate properties sold by the entity. + References No definition available. + Details
Name: | nen_RealEstatePropertySalesPrice
Namespace Prefix: | nen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the amortization period of value of the tenant relationships. + References No definition available. + Details
Name: | nen_RealEstatePropertyTenantRelationshipsAmortizationTerm
Namespace Prefix: | nen_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2443-110228 + Details
Name: | us-gaap_GainLossOnDispositionOfAssets1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfUnitsInRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
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_RealEstatePropertiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=nen_HamiltonGreenApartmentsLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=nen_CaptainParkersLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=nen_HamiltonOnMainLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=nen_Hamilton1025LLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=nen_Mortgage4.34PercentAugust2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |