XML 60 R49.htm IDEA: XBRL DOCUMENT
v3.19.1

MORTGAGE NOTES PAYABLE (Mortgage by property) (Details) | Mar. 29, 2018 USD ($) item | Sep. 29, 2017 USD ($) | Jul. 06, 2017 USD ($) item | Aug. 03, 2016 USD ($) | Jan. 07, 2016 USD ($) | Dec. 31, 2018 item | Dec. 31, 2017 USD ($) item | Jul. 16, 2017 USD ($) | Dec. 31, 2016 item
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
MORTGAGE NOTES PAYABLE |  |  |  |  |  |  |  |  |
Number of units | item |  |  |  |  |  | 1,033 | 1,033 |  | 1,033
Line of credit |  |  |  |  |  |  | $ 2,000,000 |  |
Hamilton Green |  |  |  |  |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |  |  |  |  |
Closing Costs |  |  |  | $ 227,663 |  |  |  |  |
Hamilton Essex 81 |  |  |  |  |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |  |  |  |  |
Number of units | item |  |  |  |  |  | 49 | 49 |  | 49
Residences at Captain Parkers LLC Residential Apartments Lexington, Massachusetts |  |  |  |  |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |  |  |  |  |
Closing Costs |  |  |  |  | $ 175,000 |  |  |  |
Hamilton Highlands LLC Residential Needham Massachusetts [Member] |  |  |  |  |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |  |  |  |  |
Number of units | item | 79 |  |  |  |  |  |  |  |
Loan amount | $ 21,500,000 |  |  |  |  |  |  |  |
Purchase price of real estate properties | 34,500,000 |  |  |  |  |  |  |  |
Cash payment | 13,000,000 |  |  |  |  |  |  |  |
Cash from reserves | 5,000,000 |  |  |  |  |  |  |  |
Line of credit | $ 8,000,000 |  |  |  |  |  |  |  |
Woodland Park Apartments LLC Newton Massachusetts |  |  |  |  |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |  |  |  |  |
Number of units | item |  |  | 126 |  |  |  |  |  |
Loan amount |  | $ 22,250,000 | $ 16,000,000 |  |  |  |  | $ 16,000,000 |
Purchase price of real estate properties |  |  | 45,600,000 |  |  |  |  |  |
Line of credit |  |  | $ 25,000,000 |  |  |  |  |  |
Closing Costs |  | $ 116,000 |  |  |  |  |  |  |
Interest rate (as a percent) |  | 3.79% |  |  |  |  |  | 4.75% |
Mortgages payable | Minimum |  |  |  |  |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 3.76% |  |  |
Mortgages payable | Maximum |  |  |  |  |  |  |  |  |
MORTGAGE NOTES PAYABLE |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  | 5.81% |  |  |

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 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 Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_Cash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + 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://fasb.org/us-gaap/role/ref/legacyRef -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 The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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 The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=nen_HamiltonEssex81LLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=nen_HamiltonHighlandsLlcResidentialNeedhamMassachusettsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_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: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |