Consolidated Statement 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, 2018	$ 38,181					$ 39,764	$ (1,583)
Net income (loss)	(471)					(471)
Other comprehensive income	707						707
Net proceeds from stock offering (4,876,677 shares issued)	20,029	$ 49	$ 19,980
Purchase of ESOP (175,528 shares purchased)	(1,755)				$ (1,755)
Balance at Mar. 31, 2019	56,691	49	19,980		(1,755)	39,293	(876)
Balance at Dec. 31, 2019	58,665	49	19,981		(1,685)	40,213	107
Net income (loss)	287					287
1895 Bancorp of Wisconsin, Inc. common stock held by PyraMax Bank reclassified to treasury stock	(175)			$ (175)
Other comprehensive income	(124)						(124)
ESOP shares committed to be released (1,755 shares)	18		1		17
Balance at Mar. 31, 2020	$ 58,671	$ 49	$ 19,982	$ (175)	$ (1,668)	$ 40,500	$ (17)