Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Treasury Stock	Unallocated common stock of ESOP	Retained earnings	Accumulated other comprehensive income (loss)
Balance at Dec. 31, 2020	$ 60,008	$ 49	$ 20,134	$ (1,228)	$ (1,615)	$ 41,530	$ 1,138
Net (loss) income	85					85
Other comprehensive loss	(996)						(996)
Purchase of treasury stock by Rabbi Trust	(136)			(136)
Sales of treasury stock by Rabbi Trust	10			10
Repurchase of common stock	(15)		(15)
Gross proceeds from stock offering	35,418	15	35,403
Contribution from 1895 Bancorp of Wisconsin, MHC	100		100
Stock offering costs	(1,988)		(1,988)
Retirement of treasury shares from stock offering			(1,053)	1,053
Purchase of shares by ESOP	(2,041)				(2,041)
ESOP shares committed to be released	246		22		224
Retirement of common stock	(69)		(69)
Stock options exercised	30		30
Stock compensation expense	241		241
Balance at Dec. 31, 2021	90,893	64	52,805	(301)	(3,432)	41,615	142
Net (loss) income	(148)					(148)
Other comprehensive loss	(11,633)						(11,633)
Reimbursement of stock offering costs	2		2
Purchase of shares by ESOP	(1,062)				(1,062)
ESOP shares committed to be released	200		13		187
Repurchase and retirement of shares-stock repurchase program	(3,173)	(3)	(3,170)
Retirement of common stock	(81)		(81)
Restricted stock award grants	0	1	(1)
Stock compensation expense	363		363
Transactional rounding	1					1
Balance at Dec. 31, 2022	$ 75,362	$ 62	$ 49,931	$ (301)	$ (4,307)	$ 41,468	$ (11,491)