Document And Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 10, 2021	Jun. 30, 2020
Document Information [Line Items]
Entity Central Index Key	0000834285
Entity Registrant Name	REPUBLIC FIRST BANCORP INC
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Document Transition Report	false
Entity File Number	000-17007
Entity Incorporation, State or Country Code	PA
Entity Tax Identification Number	23-2486815
Entity Address, Address Line One	50 South 16th Street
Entity Address, City or Town	Philadelphia
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19102
City Area Code	215
Local Phone Number	735-4422
Title of 12(b) Security	Common Stock
Trading Symbol	FRBK
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 128,218,333
Entity Common Stock, Shares Outstanding		58,867,653