XML 64 R54.htm IDEA: XBRL DOCUMENT v3.25.2

RENTAL INCOME (Commercial Leases) (Details)	6 Months Ended
	Jun. 30, 2025 USD ($) ft² item
RENTAL INCOME
Annual base rent for expiring leases | $	$ 4,070,826
Total square feet for expiring leases | ft²	136,481
Total number of leases expiring | item	64
Percentage of annual base rent for expiring leases	100.00%
2026
RENTAL INCOME
Annual base rent for expiring leases | $	$ 459,785
Total square feet for expiring leases | ft²	26,520
Total number of leases expiring | item	26
Percentage of annual base rent for expiring leases	11.00%
2027
RENTAL INCOME
Annual base rent for expiring leases | $	$ 639,314
Total square feet for expiring leases | ft²	19,926
Total number of leases expiring | item	11
Percentage of annual base rent for expiring leases	16.00%
2028
RENTAL INCOME
Annual base rent for expiring leases | $	$ 436,121
Total square feet for expiring leases | ft²	12,454
Total number of leases expiring | item	7
Percentage of annual base rent for expiring leases	11.00%
2029
RENTAL INCOME
Annual base rent for expiring leases | $	$ 402,289
Total square feet for expiring leases | ft²	10,033
Total number of leases expiring | item	6
Percentage of annual base rent for expiring leases	10.00%
2030
RENTAL INCOME
Annual base rent for expiring leases | $	$ 541,212
Total square feet for expiring leases | ft²	18,405
Total number of leases expiring | item	8
Percentage of annual base rent for expiring leases	13.00%
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%
2034
RENTAL INCOME
Annual base rent for expiring leases | $	$ 533,784
Total square feet for expiring leases | ft²	20,897
Total number of leases expiring | item	2
Percentage of annual base rent for expiring leases	13.00%
Thereafter
RENTAL INCOME
Annual base rent for expiring leases | $	$ 947,721
Total square feet for expiring leases | ft²	27,140
Total number of leases expiring | item	3
Percentage of annual base rent for expiring leases	23.00%

X

- Definition

Represents the amount of annual rent to be receivable for leases to be expired.

+ References

No definition available.

+ Details

Name:	nen_OperatingLeasesAnnualBaseRentForExpiringLeases
Namespace Prefix:	nen_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Represents the number of leases to be expired.

+ References

No definition available.

+ Details

Name:	nen_OperatingLeasesNumberOfLeasesExpiring
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

Name:	nen_OperatingLeasesPercentageOfAnnualBaseRentForExpiringLeases
Namespace Prefix:	nen_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the square feet area of rental properties for which leases are to be expired.

+ References

No definition available.

+ Details

Name:	nen_OperatingLeasesSquareFeetForExpiringLeases
Namespace Prefix:	nen_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	duration

X

- 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

Name:	us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=nen_OperatingLeasesExpirationPeriodYearOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=nen_OperatingLeasesExpirationPeriodYearTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=nen_OperatingLeasesExpirationPeriodYearThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=nen_OperatingLeasesExpirationPeriodYearFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=nen_OperatingLeasesExpirationPeriodYearFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=nen_OperatingLeasesExpirationPeriodYearSevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=nen_OperatingLeasesExpirationPeriodYearNineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LeaseContractualTermAxis=nen_OperatingLeasesExpirationPeriodThereafterMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: