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RENTAL INCOME (Tables) | 3 Months Ended
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Mar. 31, 2018
RENTAL INCOME |
Schedule of minimum future annual rental income on non-cancellable operating leases | Approximately 7% was related to commercial properties, which have minimum future annual rental income on non-cancellable operating leases at March 31, 2018 as follows:
|  | Commercial |
|  | Property Leases |
2019 |  | $ | 2,662,000 |
2020 |  |  | 2,213,000 |
2021 |  |  | 1,943,000 |
2022 |  |  | 1,290,000 |
2023 |  |  | 646,000 |
Thereafter |  |  | 1,105,000 |
|  | $ | 9,859,000 |
Schedule of information for commercial leases |
|  | Annual base |  |  |  |  |  | Percentage of |
|  | rent for |  | Total square feet |  | Total number of |  | annual base rent for |
Through March 31, |  | expiring leases |  | for expiring leases |  | leases expiring |  | expiring leases |
2019 |  | $ | 431,751 |  | 16,542 |  | 12 |  | 14 | %
2020 |  |  | 458,122 |  | 17,135 |  | 10 |  | 15 | %
2021 |  |  | 193,519 |  | 4,170 |  | 6 |  | 6 | %
2022 |  |  | 1,137,030 |  | 47,591 |  | 9 |  | 39 | %
2023 |  |  | 246,341 |  | 7,087 |  | 4 |  | 8 | %
2024 |  |  | 379,670 |  | 11,668 |  | 4 |  | 13 | %
2025 |  |  | — |  | — |  | — |  | — | %
2026 |  |  | — |  | — |  | — |  | — | %
2027 |  |  | — |  | — |  | — |  | — | %
2028 |  |  | — |  | — |  | — |  | — | %
2029 |  |  | 142,450 |  | 3,850 |  | 1 |  | 5 | %
Totals |  | $ | 2,988,883 |  | 108,043 |  | 46 |  | 100 | %

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- Definition Tabular disclosure of information related to commercial leases, including annual base rent, total square feet, total number, and percentage of annual base rent for expiring leases. + References No definition available. + Details
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- Definition Tabular disclosure of future minimum rental receivable in the aggregate and for each of the five succeeding fiscal years for noncancelable operating leases. + References No definition available. + Details
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Namespace Prefix: | nen_
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- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration