Parent Company Only Condensed Financial Information, Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities [Abstract]
Net loss	$ (642)	$ (206)
Adjustments to reconcile net loss to net cash used in operating activities [Abstract]
Change in other assets	114	124
Change in accrued expenses and other liabilities	369	310
Net cash (used in) provided by operating activities	(13,555)	8,533
Cash flows from investing activities [Abstract]
Net cash provided by (used in) investing activities	50,712	(39,149)
Cash flows from financing activities [Abstract]
Net cash provided by (used in) financing activities	43,386	29,531
Net change in cash and cash equivalents	80,543	(1,085)
Cash and cash equivalents at beginning of the year	15,566	16,651
Cash and cash equivalents at end of the year	96,109	15,566
Broadway Financial Corporation [Member]
Cash flows from operating activities [Abstract]
Net loss	(642)	(206)
Adjustments to reconcile net loss to net cash used in operating activities [Abstract]
Equity in undistributed subsidiary income	(210)	(459)
Change in other assets	(223)	(287)
Change in accrued expenses and other liabilities	21	(9)
Net cash (used in) provided by operating activities	(1,054)	(961)
Cash flows from investing activities [Abstract]
Dividends from bank subsidiary	2,000	1,650
Net cash provided by (used in) investing activities	2,000	1,650
Cash flows from financing activities [Abstract]
Common stock repurchased for tax withholdings	0	(14)
Repayments of borrowings	(1,020)	(765)
Proceeds from repayment of ESOP loan	66	68
Net cash provided by (used in) financing activities	(954)	(711)
Net change in cash and cash equivalents	(8)	(22)
Cash and cash equivalents at beginning of the year	134	156
Cash and cash equivalents at end of the year	$ 126	$ 134