Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Preferred Stock [Member] Preferred Stock Non-Voting [Member]	Preferred Stock [Member] Preferred Stock Non-Voting [Member] Employees, Excluding Directors [Member]	Preferred Stock [Member] Preferred Stock Non-Voting [Member] Directors [Member]	Common Stock [Member] Common Stock Voting [Member]	Common Stock [Member] Common Stock Voting [Member] Employees, Excluding Directors [Member]	Common Stock [Member] Common Stock Voting [Member] Directors [Member]	Common Stock [Member] Common Stock Non-Voting [Member]	Common Stock [Member] Common Stock Non-Voting [Member] Employees, Excluding Directors [Member]	Common Stock [Member] Common Stock Non-Voting [Member] Directors [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Employees, Excluding Directors [Member]	Additional Paid-in Capital [Member] Directors [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Other Comprehensive Loss [Member] Employees, Excluding Directors [Member]	Accumulated Other Comprehensive Loss [Member] Directors [Member]	Retained Earnings [Member]	Retained Earnings [Member] Employees, Excluding Directors [Member]	Retained Earnings [Member] Directors [Member]	Unearned ESOP Shares [Member]	Unearned ESOP Shares [Member] Employees, Excluding Directors [Member]	Unearned ESOP Shares [Member] Directors [Member]	Treasury Stock [Member]	Treasury Stock [Member] Employees, Excluding Directors [Member]	Treasury Stock [Member] Directors [Member]	Non-Controlling Interest [Member]	Non-Controlling Interest [Member] Employees, Excluding Directors [Member]	Non-Controlling Interest [Member] Directors [Member]	Total	Employees, Excluding Directors [Member]	Directors [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Preferred Stock [Member] Preferred Stock Non-Voting [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member] Common Stock Voting [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Common Stock [Member] Common Stock Non-Voting [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Accumulated Other Comprehensive Loss [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Unearned ESOP Shares [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Treasury Stock [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member] Non-Controlling Interest [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance at Dec. 31, 2021	$ 3,000			$ 58			$ 35			$ 140,955			$ (551)			$ 3,673			$ (829)			$ (5,326)			$ 100			$ 141,115
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0			0			0			0			0			4,130			0			0			51			4,181
Preferred shares issued	150,000			0			0			0			0			0			0			0			0			150,000
Dividends declared and paid on preferred stock	0			0			0			0			0			(15)			0			0			0			(15)
Release of unearned ESOP shares	0			0			0			8			0			0			48			0			0			56
Stock-based compensation expense		$ 0	$ 0		$ 1	$ 0		$ 0	$ 0		$ 88	$ 84		$ 0	$ 0		$ 0	$ 0		$ 0	$ 0		$ 0	$ 0		$ 0	$ 0		$ 89	$ 84
Conversion of preferred shares to common shares	(3,000)			2			0			2,988			0			0			0			0			0			(11)
Conversion of non-voting common shares into voting common shares	0			4			(4)			0			0			0			0			0			0			(1)
Other comprehensive loss, net of tax	0			0			0			0			(17,917)			0			0			0			0			(17,917)
Balance at Sep. 30, 2022	150,000			64			31			144,123			(18,468)			7,788			(781)			(5,326)			151			277,582
Balance at Jun. 30, 2022	150,000			63			32			144,093			(9,901)			6,470			(797)			(5,326)			123			284,757
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0			0			0			0			0			1,318			0			0			28			1,346
Release of unearned ESOP shares	0			0			0			(5)			0			0			16			0			0			11
Stock-based compensation expense		0			0			0			35			0			0			0			0			0			35
Conversion of non-voting common shares into voting common shares	0			1			(1)			0			0			0			0			0			0			(1)
Other comprehensive loss, net of tax	0			0			0			0			(8,567)			0			0			0			0			(8,567)
Balance at Sep. 30, 2022	150,000			64			31			144,123			(18,468)			7,788			(781)			(5,326)			151			277,582
Balance at Dec. 31, 2022	150,000			64			31			144,157			(17,473)			9,294			(1,265)			(5,326)			170			$ 279,652			$ (1,256)	$ (1,256)	$ 150,000	$ 64	$ 31	$ 144,157	$ (17,473)	$ 8,038	$ (1,265)	$ (5,326)	$ 170	$ 278,396
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]																												ASU 2016-13 [Member]
Net income	0			0			0			0			0			1,907			0			0			20			$ 1,927
Release of unearned ESOP shares	0			0			0			(15)			0			0			48			0			0			33
ESOP adjustment	0			0			0			0			0			0			(214)			0			0			(214)
Purchase of unreleased ESOP shares	0			0			0			0			0			0			(3,400)			0			0			(3,400)
Stock-based compensation expense		0	0		0	0		0	0		173	95		0	0		0	0		0	0		0	0		0	0		173	95
Other comprehensive loss, net of tax	0			0			0			0			(1,853)			0			0			0			0			(1,853)
Balance at Sep. 30, 2023	150,000			64			31			144,410			(19,326)			9,945			(4,831)			(5,326)			190			275,157
Balance at Jun. 30, 2023	150,000			65			31			144,331			(17,419)			9,854			(4,247)			(5,326)			195			277,484
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	0			0			0			0			0			91			0			0			(5)			86
Release of unearned ESOP shares	0			0			0			(5)			0			0			16			0			0			11
Purchase of unreleased ESOP shares	0			0			0			0			0			0			(600)			0			0			(600)
Stock-based compensation expense		$ 0	$ 0		$ (1)	$ 0		$ 0	$ 0		$ 88	$ (4)		$ 0	$ 0		$ 0	$ 0		$ 0	$ 0		$ 0	$ 0		$ 0	$ 0		$ 87	$ (4)
Other comprehensive loss, net of tax	0			0			0			0			(1,907)			0			0			0			0			(1,907)
Balance at Sep. 30, 2023	$ 150,000			$ 64			$ 31			$ 144,410			$ (19,326)			$ 9,945			$ (4,831)			$ (5,326)			$ 190			$ 275,157