NSTS Bancorp, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Note 4 - Allowance for Credit Losses - Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Nonaccrual, No Allowance	$ 284	$ 0
Non-Accrual	284	0
First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Nonaccrual, No Allowance	284	0
Non-Accrual	284	0
First Mortgage Loans [Member] \| Multifamily [Member]
Nonaccrual, No Allowance	0	0
Non-Accrual	0	0
First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Nonaccrual, No Allowance	0	0
Non-Accrual	0	0
First Mortgage Loans [Member] \| Construction Loans [Member]
Nonaccrual, No Allowance	0	0
Non-Accrual	0	0
Consumer Portfolio Segment [Member]
Nonaccrual, No Allowance	0	0
Non-Accrual	$ 0	$ 0