NSTS Bancorp, Inc. Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Loans and Allowance for Loan Losses - Aging of Bank's Loan Portfolio (Details)

Note 3 - Loans and Allowance for Loan Losses - Aging of Bank's Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Loans	$ 103,509	$ 102,991
Non-accrual	148	154
First Mortgage Loans [Member]
Loans	103,222	102,742
First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	96,224	95,584
Non-accrual	148	154
First Mortgage Loans [Member] \| Multifamily [Member]
Loans	3,203	3,237
Non-accrual	0	0
First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	3,795	3,921
Non-accrual	0	0
Consumer Portfolio Segment [Member]
Loans	287	249
Non-accrual	0	0
Financial Asset, 31 to 89 Days Past Due [Member]
Loans	21	28
Financial Asset, 31 to 89 Days Past Due [Member] \| First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	21	28
Financial Asset, 31 to 89 Days Past Due [Member] \| First Mortgage Loans [Member] \| Multifamily [Member]
Loans	0	0
Financial Asset, 31 to 89 Days Past Due [Member] \| First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	0	0
Financial Asset, 31 to 89 Days Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| First Mortgage Loans [Member] \| Multifamily [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	0	0
Financial Asset, Past Due [Member]
Loans	169	182
Financial Asset, Past Due [Member] \| First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	169	182
Financial Asset, Past Due [Member] \| First Mortgage Loans [Member] \| Multifamily [Member]
Loans	0	0
Financial Asset, Past Due [Member] \| First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	0	0
Financial Asset, Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	0	0
Financial Asset, Not Past Due [Member]
Loans	103,340	102,809
Financial Asset, Not Past Due [Member] \| First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Loans	96,055	95,402
Financial Asset, Not Past Due [Member] \| First Mortgage Loans [Member] \| Multifamily [Member]
Loans	3,203	3,237
Financial Asset, Not Past Due [Member] \| First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Loans	3,795	3,921
Financial Asset, Not Past Due [Member] \| Consumer Portfolio Segment [Member]
Loans	$ 287	$ 249