XML 60 R48.htm IDEA: XBRL DOCUMENT
v3.8.0.1

MORTGAGE NOTES PAYABLE (Mortgage by property) (Details) - USD ($) | Sep. 29, 2017 | Aug. 03, 2016 | Dec. 31, 2017 | Jul. 16, 2017 | Jul. 06, 2017
--- | --- | --- | --- | --- | ---
Hamilton Green |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |
Closing Costs |  | $ 227,663 |  |  |
Woodland Park Apartments LLC Newton Massachusetts |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |
Term of debt | 30 years |  |  |  |
Mortgage amount | $ 22,250,000 |  |  | $ 16,000,000 | $ 16,000,000
Interest rate (as a percent) | 3.79% |  |  | 4.75% |
Mortgages payable | Minimum |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |
Interest rate (as a percent) |  |  | 3.24% |  |
Mortgages payable | Maximum |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |
Interest rate (as a percent) |  |  | 5.97% |  |

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 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 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_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=nen_WoodlandParkApartmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_MortgagesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |