Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Accumulated Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2020	$ 438,816	$ 206	$ 215,316	$ (22,370)	$ 224,645	$ 21,019
Beginning Balance, Shares at Dec. 31, 2020		20,589,309		(1,258,250)
Comprehensive income (loss):
Net income	43,079				43,079
Other comprehensive income (loss):
Change in unrealized gains on debt securities, net of tax	(4,157)					(4,157)
Comprehensive income (loss)	38,922
Common stock issued	$ 1,563		1,563
Common stock issued, Shares		32,995
Purchase of treasury stock, Shares	0
Share-based compensation	$ 286		286
Dividends to shareholders	(11,221)				(11,221)
Ending Balance at Jun. 30, 2021	468,366	$ 206	217,165	$ (22,370)	256,503	16,862
Ending Balance, Shares at Jun. 30, 2021		20,622,304		(1,258,250)
Beginning Balance at Mar. 31, 2021	447,626	$ 206	215,468	$ (22,370)	238,351	15,971
Beginning Balance, Shares at Mar. 31, 2021		20,589,309		(1,258,250)
Comprehensive income (loss):
Net income	23,767				23,767
Other comprehensive income (loss):
Change in unrealized gains on debt securities, net of tax	891					891
Comprehensive income (loss)	24,658
Common stock issued	$ 1,563		1,563
Common stock issued, Shares		32,995
Purchase of treasury stock, Shares	0
Share-based compensation	$ 134		134
Dividends to shareholders	(5,615)				(5,615)
Ending Balance at Jun. 30, 2021	468,366	$ 206	217,165	$ (22,370)	256,503	16,862
Ending Balance, Shares at Jun. 30, 2021		20,622,304		(1,258,250)
Beginning Balance at Dec. 31, 2021	$ 399,323	$ 206	217,458	$ (22,370)	190,492	13,537
Beginning Balance, Shares at Dec. 31, 2021	19,364,054	20,622,304		(1,258,250)
Comprehensive income (loss):
Net income	$ 23,463				23,463
Other comprehensive income (loss):
Change in unrealized gains on debt securities, net of tax	(22,411)					(22,411)
Comprehensive income (loss)	1,052
Common stock issued	1,970	$ 1	1,969
Common stock issued, Shares		54,170
Purchase of treasury stock	$ (5,701)			$ (5,701)
Purchase of treasury stock, Shares	(121,592)			(121,592)
Share-based compensation	$ 317		317
Dividends to shareholders	(11,972)				(11,972)
Ending Balance at Jun. 30, 2022	$ 384,989	$ 207	219,744	$ (28,071)	201,983	(8,874)
Ending Balance, Shares at Jun. 30, 2022	19,296,632	20,676,474		(1,379,842)
Beginning Balance at Mar. 31, 2022	$ 395,273	$ 206	217,605	$ (24,429)	201,834	57
Beginning Balance, Shares at Mar. 31, 2022		20,622,565		(1,302,143)
Comprehensive income (loss):
Net income	6,132				6,132
Other comprehensive income (loss):
Change in unrealized gains on debt securities, net of tax	(8,931)					(8,931)
Comprehensive income (loss)	(2,799)
Common stock issued	1,970	$ 1	1,969
Common stock issued, Shares		53,909
Purchase of treasury stock	$ (3,642)			$ (3,642)
Purchase of treasury stock, Shares	(77,699)			(77,699)
Share-based compensation	$ 170		170
Dividends to shareholders	(5,983)				(5,983)
Ending Balance at Jun. 30, 2022	$ 384,989	$ 207	$ 219,744	$ (28,071)	$ 201,983	$ (8,874)
Ending Balance, Shares at Jun. 30, 2022	19,296,632	20,676,474		(1,379,842)