NSTS Bancorp, Inc. Quarterly report [Sections 13 or 15(d)]

Quarterly report [Sections 13 or 15(d)]

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Note 3 - Loans and Allowance for Credit Losses (Details Textual)

v3.25.3

Note 3 - Loans and Allowance for Credit Losses (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Escrow Deposit	$ 231,000		$ 231,000			$ 236,000
Financing Receivable, Accrued Interest, after Allowance for Credit Loss	582,000		582,000			560,000
Loans and Leases Receivable, Related Parties	570,000		570,000			587,000
Off-Balance-Sheet, Credit Loss, Liability	69,000	$ 60,000	69,000	$ 60,000
Provision for Credit Losses, Amount Excluded	11,000	16,000	10,000	47,000
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	134,197,000		134,197,000			131,557,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	1,260,000	1,271,000	1,260,000	1,271,000	$ 1,200,000	1,201,000	$ 1,267,000	$ 1,176,000
Financing Receivable, Nonaccrual, Interest Income			0	0
Financing Receivable, Excluding Accrued Interest, Modified, Accumulated	0	0	0	0
Collateral Pledged [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0		0			0
First Mortgage Loans [Member]
Financing Receivable, Unpaid Principal Balance	21,000,000		21,000,000			13,900,000
First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	1,103,000	$ 1,164,000	1,103,000	$ 1,164,000	$ 1,056,000	$ 1,056,000	$ 1,165,000	$ 1,094,000
First Mortgage Loans [Member] \| One To Four Family Residential [Member] \| Collateral Pledged [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	285,000		285,000
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest	$ 0		$ 0

- Definition

Amount of unpaid principal balance of financing receivables.

+ References

No definition available.

+ Details

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Namespace Prefix:	nsts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount excluded from provision for credit losses.

+ References

No definition available.

+ Details

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Namespace Prefix:	nsts_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10))
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- Definition

Amount, after allowance for credit loss, of accrued interest on financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
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Balance Type:	debit
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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
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- Definition

Accumulated amortized cost excluding accrued interest, of financing receivable modified for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
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- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	duration

- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

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-SubTopic 210
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Namespace Prefix:	us-gaap_
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- Definition

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

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