Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Apr. 30, 2024	Jun. 30, 2023
Document Information [Line Items]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Period End Date	Dec. 31, 2023
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Document Transition Report	false
Entity File Number	001-39043
Entity Registrant Name	BROADWAY FINANCIAL CORPORATION
Entity Central Index Key	0001001171
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-4547287
Entity Address, Address Line One	4601 Wilshire Boulevard, Suite 150
Entity Address, City or Town	Los Angeles
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	90010
City Area Code	323
Local Phone Number	634-1700
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	BYFC
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	No
Entity Interactive Data Current	No
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Public Float			$ 65.4
Auditor Firm ID	659
Auditor Name	Moss Adams LLP
Auditor Location	Sacramento, California
Voting Class A Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		6,033,212
Nonvoting Class B Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1,425,574
Nonvoting Class C Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		1,672,562