XML 43 R31.htm IDEA: XBRL DOCUMENT
v3.8.0.1

RENTAL INCOME (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
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 December 31, 2017 as follows:
|  | Commercial |
|  | Property Leases |
2018 |  | $ | 2,623,000 |
2019 |  |  | 2,131,000 |
2020 |  |  | 1,767,000 |
2021 |  |  | 1,325,000 |
2022 |  |  | 565,000 |
Thereafter |  |  | 1,159,000 |
|  | $ | 9,570,000 |
Schedule of information for commercial leases |
|  | Annual base |  |  |  |  |  | Percentage of |
|  | rent for |  | Total square feet |  | Total number of |  | annual base rent for |
Through December 31, |  | expiring leases |  | for expiring leases |  | leases expiring |  | expiring leases |
2018 |  | $ | 499,878 |  | 19,724 |  | 14 |  | 17 | %
2019 |  |  | 576,710 |  | 20,838 |  | 11 |  | 19 | %
2020 |  |  | 185,494 |  | 4,461 |  | 6 |  | 6 | %
2021 |  |  | 829,156 |  | 40,323 |  | 6 |  | 29 | %
2022 |  |  | 486,772 |  | 12,218 |  | 6 |  | 16 | %
2023 |  |  | 157,443 |  | 4,771 |  | 1 |  | 5 | %
2024 |  |  | 94,184 |  | 1,858 |  | 1 |  | 3 | %
2025 |  |  | — |  | — |  | — |  | 0 | %
2026 |  |  | — |  | — |  | — |  | 0 | %
2027 |  |  | — |  | — |  | — |  | 0 | %
2028 |  |  | — |  | — |  | — |  | 0 | %
2029 |  |  | 142,450 |  | 3,850 |  | 1 |  | 5 | %
Totals |  | $ | 2,972,087 |  | 108,043 |  | 46 |  | 100 | %

X
- 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
Name: | nen_ScheduleOfCommercialLeaseInformationTableTextBlock
Namespace Prefix: | nen_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | nen_ScheduleOfFutureMinimumPaymentsReceivableFromOperatingLeasesTableTextBlock
Namespace Prefix: | nen_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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