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Commitments and Contingencies (Details) $ in Millions	1 Months Ended
	Aug. 31, 2021 USD ($) renewalOption	Dec. 31, 2025 USD ($)
Other Commitments [Line Items]
Expected investment in real estate assets		$ 15.8
Commitments to extend funds under mortgage loans receivable		8.4
Tenant improvement allowance commitments		$ 8.1
Allowance Commitment Period		2 years
Tenant Improvement Allowance Commitment Period		12 months
Corporate Office Space
Other Commitments [Line Items]
Remaining term of leases (in years)	6 years 7 months 6 days
Renewal options | renewalOption	2
Lease extension term	5 years
Annual rent expense	$ 0.5

X

- Definition

Allowance Commitment Period

+ References

No definition available.

+ Details

Name:	ntst_AllowanceCommitmentPeriod
Namespace Prefix:	ntst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Commitments To Extend Mortgage Notes Receivable

+ References

No definition available.

+ Details

Name:	ntst_CommitmentsToExtendMortgageNotesReceivable
Namespace Prefix:	ntst_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Expected Investment in Real Estate Assets

+ References

No definition available.

+ Details

Name:	ntst_ExpectedInvestmentInRealEstateAssets
Namespace Prefix:	ntst_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Lessee, Extension Term

+ References

No definition available.

+ Details

Name:	ntst_LesseeExtensionTerm
Namespace Prefix:	ntst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Lessee, Renewal Options

+ References

No definition available.

+ Details

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

X

- Definition

Operating Lease, Annual Rent Expense

+ References

No definition available.

+ Details

Name:	ntst_OperatingLeaseAnnualRentExpense
Namespace Prefix:	ntst_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Tenant Improvement Allowance Commitment

+ References

No definition available.

+ Details

Name:	ntst_TenantImprovementAllowanceCommitment
Namespace Prefix:	ntst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Tenant Improvement Allowance Commitment Period

+ References

No definition available.

+ Details

Name:	ntst_TenantImprovementAllowanceCommitmentPeriod
Namespace Prefix:	ntst_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479773/842-30-50-3

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Balance Type:	na
Period Type:	instant

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

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: