CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
BALANCE at Dec. 31, 2019	$ 14,008	$ 232,732	$ 65,839	$ 168	$ 312,747
BALANCE (in shares) at Dec. 31, 2019	14,008,233
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			8,907		8,907
Other comprehensive loss				424	424
Exercise of stock options	$ 16	162			178
Exercise of stock options (in shares)	15,358
Restricted stock	$ 32	(32)
Restricted stock (in shares)	32,318
Common stock issued to shareholders	$ 1,293	23,254			24,547
Common stock issued to shareholders (in shares)	1,292,578
Stock compensation expense		223			223
Common stock dividends			(1,463)		(1,463)
Repurchases of common stock	$ (132)	(1,943)			(2,075)
Repurchases of common stock (in shares)	(131,555)
BALANCE at Jun. 30, 2020	$ 15,217	254,396	73,283	592	343,488
BALANCE (in shares) at Jun. 30, 2020	15,216,932
BALANCE at Mar. 31, 2020	$ 15,222	254,356	67,869	(1,247)	336,200
BALANCE (in shares) at Mar. 31, 2020	15,221,990
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			6,174		6,174
Other comprehensive loss				1,839	1,839
Exercise of stock options	$ 1	4			5
Exercise of stock options (in shares)	500
Restricted stock (in shares)	418
Stock compensation expense		$ 113			113
Common stock dividends			(760)		$ (760)
Repurchases of common stock (in shares)	(5,976)	(77,000)			(83,000)
BALANCE at Jun. 30, 2020	$ 15,217	$ 254,396	73,283	592	$ 343,488
BALANCE (in shares) at Jun. 30, 2020	15,216,932
BALANCE at Dec. 31, 2020	$ 15,107	252,693	87,185	2,183	357,168
BALANCE (in shares) at Dec. 31, 2020	15,107,214
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			18,534		18,534
Other comprehensive loss				155	155
Exercise of stock options	$ 19	175			194
Exercise of stock options (in shares)	19,165
Restricted stock	$ 43	(43)
Restricted stock (in shares)	42,967
Stock compensation expense		363			363
Common stock dividends			(1,813)		(1,813)
Repurchases of common stock	$ (59)	(1,149)			(1,208)
Repurchases of common stock (in shares)	(59,610)
BALANCE at Jun. 30, 2021	$ 15,110	252,039	103,906	2,338	373,393
BALANCE (in shares) at Jun. 30, 2021	15,109,736
BALANCE at Mar. 31, 2021	$ 15,105	251,836	96,034	1,083	364,058
BALANCE (in shares) at Mar. 31, 2021	15,104,536
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			8,778		8,778
Other comprehensive loss				1,255	1,255
Exercise of stock options	$ 3	43			46
Exercise of stock options (in shares)	3,200
Restricted stock	$ 2	(2)
Restricted stock (in shares)	2,000
Stock compensation expense		162			162
Common stock dividends			(906)		(906)
BALANCE at Jun. 30, 2021	$ 15,110	$ 252,039	$ 103,906	$ 2,338	$ 373,393
BALANCE (in shares) at Jun. 30, 2021	15,109,736