Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Nov. 09, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Document Transition Report	false
Entity File Number	001-38656
Entity Registrant Name	Bank7 Corp.
Entity Central Index Key	0001746129
Entity Incorporation, State or Country Code	OK
Entity Tax Identification Number	20-0763496
Entity Address, Address Line One	1039 N.W. 63rd Street
Entity Address, City or Town	Oklahoma City
Entity Address, State or Province	OK
Entity Address, Postal Zip Code	73116-7361
City Area Code	405
Local Phone Number	810-8600
Title of 12(b) Security	Common Stock, $0.01 Par Value Per Share
Trading Symbol	BSVN
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		9,186,346