Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 04, 2018
Entity Registrant Name	BROADWAY FINANCIAL CORP \DE\
Entity Central Index Key	0001001171
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
Voting common stock
Entity Common Stock, Shares Outstanding		18,662,402
Non-voting common stock
Entity Common Stock, Shares Outstanding		8,756,396