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COMMITMENTS AND CONTINGENCIES (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 USD ($) | Jun. 09, 2015 item
Loss Contingencies [Line Items] |  |
Insurance recovery receivable | $ 345,645 |
Westgate Apartments LLC |  |
Loss Contingencies [Line Items] |  |
Number of apartments damaged | item |  | 10
Proceeds from Insurance | 606,000 |
Insurance recovery receivable | $ 346,000 |

X
- Definition Number of real estate properties damaged. + References No definition available. + Details
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Namespace Prefix: | nen_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- 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
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- Definition The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to operating activities. It excludes insurance settlements classified as investing cash flows, for example, insurance settlements related to fixed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 16 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3337-108585 + Details
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- Details
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