Parent Company Only Condensed Financial Information, Condensed Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets [Abstract]
Cash and cash equivalents	$ 96,109	$ 15,566
Other assets	431	545
Total assets	483,378	440,369
Liabilities and stockholders' equity [Abstract]
Junior subordinated debentures	3,315	4,335
us-gaap_AccruedLiabilitiesAndOtherLiabilities	4,261	4,429
Stockholders' equity	48,885	48,848	$ 48,436
Total liabilities and stockholders' equity	483,378	440,369
Broadway Financial Corporation [Member]
Assets [Abstract]
Cash and cash equivalents	126	134
Investment in bank subsidiary	49,418	50,594
Other assets	2,735	2,512
Total assets	52,279	53,240
Liabilities and stockholders' equity [Abstract]
Junior subordinated debentures	3,315	4,335
us-gaap_AccruedLiabilitiesAndOtherLiabilities	79	57
Stockholders' equity	48,885	48,848
Total liabilities and stockholders' equity	$ 52,279	$ 53,240