XML 42 R32.htm IDEA: XBRL DOCUMENT
v3.7.0.1

RENTAL PROPERTIES (Details) | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2017 USD ($) property item | Dec. 31, 2016 USD ($) | Jun. 30, 2016 property
Rental properties |  |  |
Total fixed assets | $ 265,873,314 | $ 263,659,293 |
Less: Accumulated depreciation | (100,127,929) | (94,196,482) |
Total fixed assets, net | 165,745,385 | 169,462,811 |
Land, improvements and parking lots |  |  |
Rental properties |  |  |
Total fixed assets | $ 52,918,495 | 52,612,929 |
Land, improvements and parking lots | Minimum |  |  |
Rental properties |  |  |
Useful Life | 15 years |  |
Land, improvements and parking lots | Maximum |  |  |
Rental properties |  |  |
Useful Life | 40 years |  |
Buildings and improvements |  |  |
Rental properties |  |  |
Total fixed assets | $ 173,761,734 | 173,536,288 |
Buildings and improvements | Minimum |  |  |
Rental properties |  |  |
Useful Life | 15 years |  |
Buildings and improvements | Maximum |  |  |
Rental properties |  |  |
Useful Life | 40 years |  |
Kitchen cabinets |  |  |
Rental properties |  |  |
Total fixed assets | $ 9,022,944 | 8,738,323 |
Kitchen cabinets | Minimum |  |  |
Rental properties |  |  |
Useful Life | 5 years |  |
Kitchen cabinets | Maximum |  |  |
Rental properties |  |  |
Useful Life | 10 years |  |
Carpets |  |  |
Rental properties |  |  |
Total fixed assets | $ 7,962,417 | 7,621,292 |
Carpets | Minimum |  |  |
Rental properties |  |  |
Useful Life | 5 years |  |
Carpets | Maximum |  |  |
Rental properties |  |  |
Useful Life | 10 years |  |
Air conditioning |  |  |
Rental properties |  |  |
Total fixed assets | $ 690,535 | 690,535 |
Air conditioning | Minimum |  |  |
Rental properties |  |  |
Useful Life | 5 years |  |
Air conditioning | Maximum |  |  |
Rental properties |  |  |
Useful Life | 10 years |  |
Laundry equipment |  |  |
Rental properties |  |  |
Total fixed assets | $ 274,389 | 269,784 |
Laundry equipment | Minimum |  |  |
Rental properties |  |  |
Useful Life | 5 years |  |
Laundry equipment | Maximum |  |  |
Rental properties |  |  |
Useful Life | 7 years |  |
Elevators |  |  |
Rental properties |  |  |
Total fixed assets | $ 1,139,296 | 1,139,296 |
Elevators | Minimum |  |  |
Rental properties |  |  |
Useful Life | 20 years |  |
Elevators | Maximum |  |  |
Rental properties |  |  |
Useful Life | 40 years |  |
Swimming pools |  |  |
Rental properties |  |  |
Total fixed assets | $ 444,629 | 444,629 |
Swimming pools | Minimum |  |  |
Rental properties |  |  |
Useful Life | 10 years |  |
Swimming pools | Maximum |  |  |
Rental properties |  |  |
Useful Life | 30 years |  |
Equipment |  |  |
Rental properties |  |  |
Total fixed assets | $ 10,354,242 | 10,029,639 |
Equipment | Minimum |  |  |
Rental properties |  |  |
Useful Life | 5 years |  |
Equipment | Maximum |  |  |
Rental properties |  |  |
Useful Life | 30 years |  |
Motor vehicles |  |  |
Rental properties |  |  |
Total fixed assets | $ 237,954 | 237,954 |
Motor vehicles | Maximum |  |  |
Rental properties |  |  |
Useful Life | 5 years |  |
Fences |  |  |
Rental properties |  |  |
Total fixed assets | $ 37,465 | 37,465 |
Fences | Minimum |  |  |
Rental properties |  |  |
Useful Life | 5 years |  |
Fences | Maximum |  |  |
Rental properties |  |  |
Useful Life | 15 years |  |
Furniture and fixtures |  |  |
Rental properties |  |  |
Total fixed assets | $ 8,371,845 | 8,127,100 |
Furniture and fixtures | Minimum |  |  |
Rental properties |  |  |
Useful Life | 5 years |  |
Furniture and fixtures | Maximum |  |  |
Rental properties |  |  |
Useful Life | 7 years |  |
Smoke alarms |  |  |
Rental properties |  |  |
Total fixed assets | $ 657,369 | $ 174,059 |
Smoke alarms | Minimum |  |  |
Rental properties |  |  |
Useful Life | 5 years |  |
Smoke alarms | Maximum |  |  |
Rental properties |  |  |
Useful Life | 7 years |  |
Wholly owned properties |  |  |
RENTAL PROPERTIES |  |  |
Number of properties | item | 25 |  |
Investment Properties |  |  |
RENTAL PROPERTIES |  |  |
Number of units | property | 1,033 |  | 1,033
Residential and mixed-use properties |  |  |
RENTAL PROPERTIES |  |  |
Number of units | item | 2,506 |  |
Number of properties | item | 21 |  |
Residential and mixed-use properties | Partially owned properties |  |  |
RENTAL PROPERTIES |  |  |
Number of units | item | 754 |  |
Number of properties | item | 9 |  |
Residential and mixed-use properties | Partially owned properties | Minimum |  |  |
RENTAL PROPERTIES |  |  |
Ownership interest (as a percent) | 40.00% |  |
Residential and mixed-use properties | Partially owned properties | Maximum |  |  |
RENTAL PROPERTIES |  |  |
Ownership interest (as a percent) | 50.00% |  |
Residential and mixed-use properties | Investment Properties | Partially owned properties |  |  |
RENTAL PROPERTIES |  |  |
Number of units | property | 754 |  |
Condominium |  |  |
RENTAL PROPERTIES |  |  |
Number of units | item | 19 |  |
Condominium | Wholly owned properties |  |  |
RENTAL PROPERTIES |  |  |
Number of units | item | 19 |  |
Number of properties | item | 1 |  |

X
- Definition Represents the useful life of constituents of rental properties. + References No definition available. + Details
Name: | nen_RealEstateInvestmentPropertyUsefulLife
Namespace Prefix: | nen_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
Name: | us-gaap_NumberOfRealEstateProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
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 cumulative amount of depreciation for real estate property held for investment purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(3)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_RealEstateInvestmentPropertyAtCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_RealEstateInvestmentPropertyNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_RealEstateInvestmentPropertyNetAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=nen_LandAndLandImprovementsAndParkingLotMember
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: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=nen_KitchenCabinetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=nen_CarpetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=nen_AirConditioningMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=nen_LaundryEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=nen_ElevatorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=nen_SwimmingPoolMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=us-gaap_VehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=nen_FenceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis=nen_SmokeAlarmMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstatePropertiesAxis=us-gaap_WhollyOwnedPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=nen_InvestmentPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=nen_ResidentialAndMixedUseRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RealEstatePropertiesAxis=us-gaap_PartiallyOwnedPropertiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=nen_CondominiumRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |