Parent Company Only Condensed Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities
Net income	$ 815	$ 1,869
Adjustments to reconcile net income to net cash used in operating activities:
Change in other assets	187	332
Change in accrued expenses and other liabilities	(120)	(1,690)
Net cash provided by (used in) operating activities	234	(10,226)
Cash flows from investing activities
Net cash (used in) provided by investing activities	(818)	30,152
Cash flows from financing activities
Net cash used in financing activities	(4,984)	(16,137)
Net change in cash and cash equivalents	(5,568)	3,789
Cash and cash equivalents at beginning of the year	22,219	18,430
Cash and cash equivalents at end of the year	16,651	22,219
Broadway Financial Corporation
Cash flows from operating activities
Net income	815	1,869
Adjustments to reconcile net income to net cash used in operating activities:
Equity in undistributed subsidiary income	(1,297)	(3,091)
Change in other assets	(210)	330
Change in accrued expenses and other liabilities	(112)	(183)
Net cash provided by (used in) operating activities	(804)	(1,075)
Cash flows from investing activities
Dividends from bank subsidiary	600	500
Net cash (used in) provided by investing activities	600	500
Cash flows from financing activities
Common stock repurchased for tax withholdings	(108)
Proceeds from repayment of ESOP loan	68	80
Net cash used in financing activities	(40)	80
Net change in cash and cash equivalents	(244)	(495)
Cash and cash equivalents at beginning of the year	400	895
Cash and cash equivalents at end of the year	$ 156	$ 400