Bancorp 34, Inc. Parent Company Only Financial Information (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating activities
Net (loss) income	$ (3,402)	$ 1,330
Adjustments to reconcile net (loss) income to net cash used in operating activities
Changes in prepaid and other assets	851	(123)
Changes in accrued interest and other liabilities	(1,016)	213
Net cash used in operating activities	910	9,761
Investing activities
Net cash used in investing activities	463	(56,838)
Financing activities
Repurchase of common stock	(210)	(78)
Issuance of common stock, net	10,867	6,212
Issuance of preferred stock, net	4,175	7,306
Cash dividends paid	(656)	(700)
Net cash from financing activities	10,577	48,523
Net change in cash and cash equivalents	11,950	1,446
CASH AND CASH EQUIVALENTS, beginning of period	16,947	15,501
CASH AND CASH EQUIVALENTS, end of period	28,897	16,947
Parent Company [Member]
Operating activities
Net (loss) income	(3,402)	1,330
Adjustments to reconcile net (loss) income to net cash used in operating activities
Amortization of subordinated debt issuance costs	64	84
Equity in loss (income) of subsidiary bank	1,680	(2,162)
Changes in prepaid and other assets	(354)	(297)
Changes in accrued interest and other liabilities	(348)	449
Net cash used in operating activities	(2,360)	(596)
Investing activities
Principal collections on ESOP note receivable	27	42
Other investment contributions	(494)	(315)
Capital contribution to bank subsidiary	(10,000)
Net cash used in investing activities	(10,467)	(273)
Financing activities
Repurchase of common stock	(210)	(78)
Issuance of common stock, net	10,866	6,212
Issuance of preferred stock, net	4,176	7,306
Cash dividends paid	(656)	(700)
Net cash from financing activities	14,176	12,740
Net change in cash and cash equivalents	1,349	11,871
CASH AND CASH EQUIVALENTS, beginning of period	17,835	5,964
CASH AND CASH EQUIVALENTS, end of period	$ 19,184	$ 17,835