Earnings Per Share of Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Basic and Diluted Earnings (Loss) Per Share of Common Stock [Abstract]
Net income (loss) attributable to Broadway Financial Corporation	$ 958	$ (3,487)
Less net income attributable to participating securities	7	0
Income (loss) available to common stockholders	$ 951	$ (3,487)
Weighted average common shares outstanding for basic earnings (loss) per common share (in shares)	72,039,378	27,357,750
Add: dilutive effects of stock options (in shares)	50,195	0
Add: dilutive effects of unvested restricted stock awards (in shares)	490,372	0
Weighted average common shares outstanding for diluted earnings (loss) per common share (in shares)	72,579,945	27,357,750
Income (loss) per common share - basic (in dollars per share)	$ 0.01	$ (0.13)
Income (loss) per common share - diluted (in dollars per share)	$ 0.01	$ (0.13)
Stock Options [Member]
Earnings Per Share of Common Stock [Abstract]
Unvested stock awards or potential common shares issuable under stock options (in shares)		450,000
Unvested Restricted Stock Awards [Member]
Earnings Per Share of Common Stock [Abstract]
Unvested stock awards or potential common shares issuable under stock options (in shares)		0