Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 04, 2019
Entity Registrant Name	BROADWAY FINANCIAL CORP \DE\
Document Type	10-Q
Document Period End Date	Sep. 30, 2019
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001001171
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock, Voting
Entity Common Stock, Shares Outstanding		19,111,422
Common Stock, Non-Voting
Entity Common Stock, Shares Outstanding		8,756,396