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

Note 3 - Loans and Allowance for Credit Losses - Loans on Nonaccrual Status (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Jan. 01, 2023
Nonaccrual, No Allowance	$ 263	$ 0
Non-accrual	263	0	$ 200
First Mortgage Loans [Member] \| Multifamily [Member]
Nonaccrual, No Allowance	0	0
Non-accrual	0	0	0
First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Nonaccrual, No Allowance	0	0
Non-accrual	0	0	0
First Mortgage Loans [Member] \| Construction Loans [Member]
Nonaccrual, No Allowance	0	0
Non-accrual	0	0	0
Consumer Portfolio Segment [Member]
Nonaccrual, No Allowance	0	0
Non-accrual	$ 0	$ 0	$ 0