Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Jan. 31, 2022	Jun. 30, 2021
Document Information [Line Items]
Entity Registrant Name	REPUBLIC BANCORP, INC.
Entity Central Index Key	0000921557
Document Type	10-K
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2021
Entity File Number	0-24649
Entity Incorporation, State or Country Code	KY
Entity Tax Identification Number	61-0862051
Entity Address, Address Line One	601 West Market Street
Entity Address, City or Town	Louisville
Entity Address, State or Province	KY
Entity Address, Postal Zip Code	40202
City Area Code	502
Local Phone Number	584-3600
Title of 12(b) Security	Class A Common
Trading Symbol	RBCAA
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Public Float			$ 437,098,629
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Auditor Name	Crowe LLP
Auditor Firm ID	173
Auditor Location	Louisville, Kentucky
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
ICFR Auditor Attestation Flag	true
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		17,824,472
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		2,164,903