Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock, At Cost	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Unallocated Common Stock of ESOP
Balance at Dec. 31, 2018	$ 169,172	$ 185		$ 84,581	$ 98,813	$ (8,135)	$ (6,272)
Balance, Shares at Dec. 31, 2018		18,463,028
Net income	2,327				2,327
Other comprehensive income (loss), net of tax	188					188
Treasury stock	(12,663)		$ (12,663)
Treasury stock, Shares		(886,325)
ESOP shares committed to be released (36,189 shares)	530			168			362
Restricted stock awards	923			923
Stock options	77			77
Balance at Sep. 30, 2019	160,554	$ 185	(12,663)	85,749	101,140	(7,947)	(5,910)
Balance, Shares at Sep. 30, 2019		17,576,703
Balance at Dec. 31, 2019	158,402	$ 185	(14,478)	84,777	93,688	20	(5,790)
Balance, Shares at Dec. 31, 2019		17,451,134
Net income	2,225				2,225
Other comprehensive income (loss), net of tax	148					148
Treasury stock	$ (3,803)		(3,803)
Treasury stock, Shares	(1,346,679)	(334,785)
ESOP shares committed to be released (36,189 shares)	$ 353			(9)			362
Restricted stock awards	956			956
Stock options	93			93
Balance at Sep. 30, 2020	$ 158,374	$ 185	$ (18,281)	$ 85,817	$ 95,913	$ 168	$ (5,428)
Balance, Shares at Sep. 30, 2020		17,116,349