XML 43 R33.htm IDEA: XBRL DOCUMENT
v3.25.1

RENTAL INCOME (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2025
RENTAL INCOME. |
Schedule of minimum future annual rental income on non-cancellable operating leases | ​
​ | ​ | ​ | ​ | ​
​ |  | Commercial |
​ | ​ | Property Leases |
2026 | ​ | $ | 3,567,112 | ​
2027 | ​ |  | 3,112,257 | ​
2028 | ​ |  | 2,519,739 | ​
2029 | ​ |  | 2,160,265 | ​
2030 | ​ |  | 1,632,872 | ​
Thereafter | ​ |  | 9,319,917 | ​
​ | ​ | $ | 22,312,162 | ​
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 |
2026 | ​ | $ | 363,480 | ​ | 23,754 | ​ | 25 | ​ | 10 | %
2027 | ​ |  | 437,222 | ​ | 21,475 | ​ | 11 | ​ | 12 | %
2028 | ​ |  | 260,284 | ​ | 7,652 | ​ | 5 | ​ | 7 | %
2029 | ​ |  | 528,676 | ​ | 13,535 | ​ | 6 | ​ | 15 | %
2030 | ​ |  | 367,467 | ​ | 14,327 | ​ | 6 | ​ | 10 | %
2031 | ​ |  | — | ​ | — | ​ | — | ​ | — | %
2032 | ​ |  | — | ​ | — | ​ | — | ​ | — | %
2033 | ​ |  | 110,600 | ​ | 1,106 | ​ | 1 | ​ | 3 | %
2034 | ​ |  | 533,784 | ​ | 20,897 | ​ | 2 | ​ | 15 | %
2035 | ​ |  | — | ​ | — | ​ | — | ​ | — | %
Thereafter | ​ | ​ | 947,722 | ​ | 27,140 | ​ | 3 | ​ | 28 | %
Totals | ​ | $ | 3,549,235 |  | 129,886 |  | 59 |  | 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: | dtr-types: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: | dtr-types: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