Parent Company Only Condensed Financial Information - Condensed Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Condensed Statements of Income
Interest expense	$ (6,386)	$ (4,929)
Other expense	(662)	(950)
Income tax benefit (expense)	345	(56)
Net (loss) income	(206)	815
Reportable Legal Entities | Broadway Financial Corporation
Condensed Statements of Income
Interest income	23	25
Interest expense	(247)	(243)
Other expense	(720)	(469)
Loss before income tax and undistributed subsidiary income	(944)	(687)
Income tax benefit (expense)	279	205
Equity in undistributed subsidiary income	459	1,297
Net (loss) income	$ (206)	$ 815