Consolidated Statements of Changes in Stockholders Equity - USD ($) $ in Thousands	Common Stock	Additional Paid in Capital.	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	ESOP – Owned Shares	Total
Beginning balance at Dec. 31, 2016	$ 13,534	$ 23,882	$ 132,773	$ (1,938)	$ (29,035)	$ 139,216
Net Income			15,001			15,001
Other comprehensive income (loss)			172	807		979
Common stock repurchased	(16)	(47)	(231)			(294)
Common stock dividends			(6,729)			(6,729)
Initial public offering of 3,289,000 shares of common stock net of issuance costs	64	1,384			(1,442)	6
Net change in fair value of ESOP shares					(1,014)	(1,014)
Share-based compensation expense	17	921				938
Vesting of restricted stock	100	(100)
Ending balance at Dec. 31, 2017	13,699	26,040	140,986	(1,131)	(31,491)	148,103
Adjustment for adoption of ASU 2016-01			(71)	71
Net Income			25,866			25,866
Other comprehensive income (loss)				(2,541)		(2,541)
Common stock repurchased	(15)	(53)	(288)			(356)
Common stock dividends			(7,456)			(7,456)
Net change in fair value of ESOP shares					(3,003)	(3,003)
Share-based compensation expense	11	1,836				1,847
Vesting of restricted stock	80	(80)
Ending balance at Dec. 31, 2018	13,775	27,743	159,037	(3,601)	(34,494)	162,460
Net Income			29,540			29,540
Other comprehensive income (loss)				5,537		5,537
Common stock repurchased	(81)	(291)	(1,576)			(1,948)
Common stock dividends			(8,909)			(8,909)
ESOP repurchase obligation termination					$ 34,494	34,494
Initial public offering of 3,289,000 shares of common stock net of issuance costs	3,289	59,515				62,804
Share-based compensation expense	13	1,737				1,750
Vesting of restricted stock	54	(54)
Ending balance at Dec. 31, 2019	$ 17,050	$ 88,650	$ 178,092	$ 1,936		$ 285,728