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

Note 4 - Allowance for Credit Losses - Changes in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Beginning balance	$ 1,201	$ 1,176
Charge-offs	0	0
Recoveries	99	0
Net recoveries (charge-offs)	99	0
(Release of) Provision for credit losses	(172)	25
Ending balance	1,128	1,201
First Mortgage Loans [Member] \| One To Four Family Residential [Member]
Beginning balance	1,056	1,094
Charge-offs	0	0
Recoveries	0	0
Net recoveries (charge-offs)	0	0
(Release of) Provision for credit losses	(67)	(38)
Ending balance	989	1,056
First Mortgage Loans [Member] \| Multifamily [Member]
Beginning balance	37	40
Charge-offs	0	0
Recoveries	0	0
Net recoveries (charge-offs)	0	0
(Release of) Provision for credit losses	2	(3)
Ending balance	39	37
First Mortgage Loans [Member] \| Commercial Real Estate [Member]
Beginning balance	41	37
Charge-offs	0	0
Recoveries	0	0
Net recoveries (charge-offs)	0	0
(Release of) Provision for credit losses	(4)	4
Ending balance	37	41
First Mortgage Loans [Member] \| Construction Loans [Member]
Beginning balance	65	4
Charge-offs	0	0
Recoveries	0	0
Net recoveries (charge-offs)	0	0
(Release of) Provision for credit losses	(4)	61
Ending balance	61	65
Consumer Portfolio Segment [Member]
Beginning balance	2	1
Charge-offs	0	0
Recoveries	99	0
Net recoveries (charge-offs)	99	0
(Release of) Provision for credit losses	(99)	1
Ending balance	$ 2	$ 2