XML 52 R36.htm IDEA: XBRL DOCUMENT
v3.20.1

RENTAL PROPERTIES (Hamilton Highlands) (Details) | Mar. 31, 2019 property
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RENTAL PROPERTIES |
Number of units | 1,033

X
- References No definition available. + Details
Name: | nen_RentalPropertiesDisclosureAbstract
Namespace Prefix: | nen_
Data Type: | xbrli:stringItemType
Balance Type: | na
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