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RENTAL INCOME (Commercial Leases) (Details) | 6 Months Ended
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Jun. 30, 2023 USD ($) ft² item
RENTAL INCOME |
Annual base rent for expiring leases | $ | $ 3,694,264
Total square feet for expiring leases | ft² | 128,635
Total number of leases expiring | item | 55
Percentage of annual base rent for expiring leases | 100.00%
2024 |
RENTAL INCOME |
Annual base rent for expiring leases | $ | $ 776,396
Total square feet for expiring leases | ft² | 34,544
Total number of leases expiring | item | 22
Percentage of annual base rent for expiring leases | 21.00%
2025 |
RENTAL INCOME |
Annual base rent for expiring leases | $ | $ 443,854
Total square feet for expiring leases | ft² | 16,663
Total number of leases expiring | item | 9
Percentage of annual base rent for expiring leases | 12.00%
2026 |
RENTAL INCOME |
Annual base rent for expiring leases | $ | $ 214,265
Total square feet for expiring leases | ft² | 6,132
Total number of leases expiring | item | 8
Percentage of annual base rent for expiring leases | 6.00%
2027 |
RENTAL INCOME |
Annual base rent for expiring leases | $ | $ 294,550
Total square feet for expiring leases | ft² | 12,440
Total number of leases expiring | item | 6
Percentage of annual base rent for expiring leases | 8.00%
2028 |
RENTAL INCOME |
Annual base rent for expiring leases | $ | $ 283,478
Total square feet for expiring leases | ft² | 7,651
Total number of leases expiring | item | 3
Percentage of annual base rent for expiring leases | 8.00%
2029 |
RENTAL INCOME |
Annual base rent for expiring leases | $ | $ 142,860
Total square feet for expiring leases | ft² | 3,112
Total number of leases expiring | item | 2
Percentage of annual base rent for expiring leases | 4.00%
2032 |
RENTAL INCOME |
Annual base rent for expiring leases | $ | $ 110,600
Total square feet for expiring leases | ft² | 1,106
Total number of leases expiring | item | 1
Percentage of annual base rent for expiring leases | 3.00%
2033 |
RENTAL INCOME |
Annual base rent for expiring leases | $ | $ 1,428,261
Total square feet for expiring leases | ft² | 46,987
Total number of leases expiring | item | 4
Percentage of annual base rent for expiring leases | 38.00%

X
- Definition Represents the amount of annual rent to be receivable for leases to be expired. + References No definition available. + Details
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Namespace Prefix: | nen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Represents the number of leases to be expired. + References No definition available. + Details
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Namespace Prefix: | nen_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of annual base rent for leases to be expired. + References No definition available. + Details
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- Definition Represents the square feet area of rental properties for which leases are to be expired. + References No definition available. + Details
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Data Type: | dtr-types:areaItemType
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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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