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, 2019	$ 158,402	$ 185	$ (14,478)	$ 84,777	$ 93,688	$ 20	$ (5,790)
Balance, Shares at Dec. 31, 2019		17,451,134
Net income (loss)	(1,213)				(1,213)
Other comprehensive income (loss), net of tax	90					90
Treasury stock	(2,012)		(2,012)
Treasury stock, Shares		(151,394)
ESOP shares committed to be released (12,063 shares)	124			3			121
Share-based compensation	352			352
Balance at Mar. 31, 2020	155,743	$ 185	(16,490)	85,132	92,475	110	(5,669)
Balance, Shares at Mar. 31, 2020		17,299,740
Treasury stock	2,012		2,012
Treasury stock, Shares		151,394
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 (loss)	(1,784)
Balance at Jun. 30, 2020	154,999	$ 185	(17,172)	85,481	91,904	150	(5,549)
Balance, Shares at Jun. 30, 2020		17,234,291
Balance at Mar. 31, 2020	155,743	$ 185	(16,490)	85,132	92,475	110	(5,669)
Balance, Shares at Mar. 31, 2020		17,299,740
Net income (loss)	(571)				(571)
Other comprehensive income (loss), net of tax	40					40
Treasury stock	(682)		(682)
Treasury stock, Shares		(65,449)
ESOP shares committed to be released (12,063 shares)	123			3			120
Share-based compensation	346			346
Balance at Jun. 30, 2020	154,999	$ 185	(17,172)	85,481	91,904	150	(5,549)
Balance, Shares at Jun. 30, 2020		17,234,291
Treasury stock	682		682
Treasury stock, Shares		65,449
Balance at Dec. 31, 2020	159,544	$ 185	(18,114)	85,105	97,541	135	(5,308)
Balance, Shares at Dec. 31, 2020		17,125,969
Net income (loss)	2,452				2,452
Other comprehensive income (loss), net of tax	(107)					(107)
Treasury stock	(1,171)		(1,171)
Treasury stock, Shares		(107,717)
ESOP shares committed to be released (12,063 shares)	134			13			121
Share-based compensation	352			352
Balance at Mar. 31, 2021	161,204	$ 185	(19,285)	85,470	99,993	28	(5,187)
Balance, Shares at Mar. 31, 2021		17,018,252
Treasury stock	1,171		1,171
Treasury stock, Shares		107,717
Balance at Dec. 31, 2020	159,544	$ 185	(18,114)	85,105	97,541	135	(5,308)
Balance, Shares at Dec. 31, 2020		17,125,969
Net income (loss)	$ 8,384
Treasury stock, Shares	(1,135,086)
Balance at Jun. 30, 2021	$ 171,890	$ 185	(15,069)	85,956	105,925	(41)	(5,066)
Balance, Shares at Jun. 30, 2021		17,327,942
Treasury stock, Shares	1,135,086
Balance at Mar. 31, 2021	$ 161,204	$ 185	(19,285)	85,470	99,993	28	(5,187)
Balance, Shares at Mar. 31, 2021		17,018,252
Net income (loss)	5,932				5,932
Other comprehensive income (loss), net of tax	(69)					(69)
Treasury stock	(4,307)		(4,216)	(91)
Treasury stock, Shares		(309,690)
ESOP shares committed to be released (12,063 shares)	164			43			121
Share-based compensation	352			352
Balance at Jun. 30, 2021	171,890	$ 185	(15,069)	85,956	$ 105,925	$ (41)	$ (5,066)
Balance, Shares at Jun. 30, 2021		17,327,942
Treasury stock	$ 4,307		$ 4,216	$ 91
Treasury stock, Shares		309,690