v3.26.1
Cover
Apr. 27, 2026
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Apr. 27, 2026
Entity File Number 001-42889
Entity Registrant Name Commercial Bancgroup, Inc.
Entity Central Index Key 0001981546
Entity Tax Identification Number 62-1039469
Entity Incorporation, State or Country Code TN
Entity Address, Address Line One 6710 Cumberland Gap Parkway
Entity Address, City or Town Harrogate
Entity Address, State or Province TN
Entity Address, Postal Zip Code 37752
City Area Code 423
Local Phone Number 869-5151
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.01 par value per share
Trading Symbol CBK
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false