Parent Company Only Condensed Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 21, 2016	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities
Net income		$ 3,480	$ 9,072
Adjustments to reconcile net income to net cash used in operating activities:
Change in other assets		593	906
Change in accrued expenses and other liabilities		(1,170)	2,815
Net cash provided by operating activities		930	14,165
Cash flows from investing activities
Net cash used in investing activities		(74,104)	(7,863)
Cash flows from financing activities
Net proceeds from issuance of common stock		1,125
Repurchase of common stock		(3,997)
Loan to ESOP	$ (1,200)	(1,176)
Net cash provided by financing activities		23,765	40,747
Net change in cash and cash equivalents		(49,409)	47,049
Cash and cash equivalents at beginning of the year		67,839	20,790
Cash and cash equivalents at end of the year		18,430	67,839
Broadway Financial Corporation
Cash flows from operating activities
Net income		3,480	9,072
Adjustments to reconcile net income to net cash used in operating activities:
Equity in undistributed subsidiary income		(2,336)	(9,703)
Change in other assets		(2,345)
Change in accrued expenses and other liabilities		128	(233)
Net cash provided by operating activities		(1,073)	(864)
Cash flows from investing activities
Dividends from bank subsidiary		4,000
Net cash used in investing activities		4,000
Cash flows from financing activities
Net proceeds from issuance of common stock		1,125
Repurchase of common stock		(3,997)
Loan to ESOP		(1,176)
Net cash provided by financing activities		(4,048)
Net change in cash and cash equivalents		(1,121)	(864)
Cash and cash equivalents at beginning of the year		2,016	2,880
Cash and cash equivalents at end of the year		$ 895	$ 2,016