Real Estate Investments - Schedule of Investment Portfolio (Details) $ in Thousands	12 Months Ended
Dec. 31, 2025 USD ($) property	Dec. 31, 2024 USD ($) property
Real Estate [Line Items]
Number of Investments	761	692
Amount of Investment \| $	$ 2,773,722	$ 2,356,892
Loan entered and disposed during the year	1
Classified as held for investment
Real Estate [Line Items]
Number of Investments	656	589
Amount of Investment \| $	$ 2,585,707	$ 2,164,566
Properties held for sale
Real Estate [Line Items]
Number of Investments	21	23
Amount of Investment \| $	$ 39,960	$ 46,725
Mortgage loans receivable
Real Estate [Line Items]
Number of Investments	81	76
Amount of Investment \| $	$ 142,555	$ 139,483
Properties under development
Real Estate [Line Items]
Number of Investments	3	4
Amount of Investment \| $	$ 5,500	$ 6,118
Real Estate Property, Vacant
Real Estate [Line Items]
Number of Investments	1	1
Real Estate Property, Developed
Real Estate [Line Items]
Number of Investments		1

Loans Enterd and Disposed During Period

No definition available.

Name:	ntst_LoansEnterdAndDisposedDuringPeriod
Namespace Prefix:	ntst_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of real estate properties owned as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(d))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(6))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

+ Details

Name:	us-gaap_RealEstateInvestmentPropertyAtCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 976
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477332/976-310-50-1

+ Details

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

- Details

Name:	us-gaap_RealEstatePropertiesAxis=ntst_RealEstatePropertyHeldForInvestmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstatePropertiesAxis=ntst_RealEstatePropertyHeldForSaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstatePropertiesAxis=ntst_RealEstatePropertyLoansReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstatePropertiesAxis=ntst_RealEstatePropertyUnderDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstatePropertiesAxis=ntst_RealEstatePropertyVacantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RealEstatePropertiesAxis=ntst_RealEstatePropertyDevelopedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: