Cover |
Nov. 10, 2021 |
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| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 10, 2021 |
| Entity File Number | 333-259483 |
| Entity Registrant Name | NSTS Bancorp, Inc. |
| Entity Central Index Key | 0001881592 |
| Entity Tax Identification Number | 87-2522769 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 700 S. Lewis Avenue |
| Entity Address, City or Town | Waukegan |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60085 |
| City Area Code | (847) |
| Local Phone Number | 336-4430 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Entity Information, Former Legal or Registered Name | (847) 336-4430 |
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- Definition For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD. No definition available.
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