Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2022	Aug. 01, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Entity Registrant Name	RIVER FINANCIAL CORPORATION
Entity Central Index Key	0001641601
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		6,659,258
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	333-205986
Entity Tax Identification Number	46-1422125
Entity Address, Address Line One	2611 Legends Drive
Entity Address, City or Town	Prattville
Entity Address, State or Province	AL
Entity Interactive Data Current	Yes
Entity Address, Postal Zip Code	36066
City Area Code	334
Local Phone Number	290-1012
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	AL