v3.26.1
Document and Entity Information
May 21, 2026
Document and Entity Information [Abstract]  
Document Type 8-K
Document Period End Date May 21, 2026
Entity Registrant Name PFS Bancorp, Inc.
Entity Incorporation, State or Country Code MD
Entity File Number 000-56602
Entity Tax Identification Number 92-2956265
Entity Address, Address Line One 1730 Fourth Street
Entity Address, City or Town Peru
Entity Address State Or Province IL
Entity Address, Postal Zip Code 61354
City Area Code 815
Local Phone Number 223-4300
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Central Index Key 0001967656
Amendment Flag false