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, 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 income (loss)				155	155
Stock options exercised	$ 19	175			$ 194
Stock options exercised (in shares)	19,165				19,040
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 income (loss)				1,255	1,255
Stock options exercised	$ 3	43			$ 46
Stock options exercised (in shares)	3,200				3,075
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
BALANCE at Dec. 31, 2021	$ 16,803	292,937	118,247	1,443	429,430
BALANCE (in shares) at Dec. 31, 2021	16,802,990
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			18,475		18,475
Other comprehensive income (loss)				(26,091)	(26,091)
Stock options exercised	$ 31	232			$ 263
Stock options exercised (in shares)	31,400				31,400
Restricted stock	$ 64	(64)
Restricted stock (in shares)	64,015
Stock compensation expense		710			$ 710
Common stock dividends			(2,360)		(2,360)
BALANCE at Jun. 30, 2022	$ 16,898	293,815	134,362	(24,648)	420,427
BALANCE (in shares) at Jun. 30, 2022	16,898,405
BALANCE at Mar. 31, 2022	$ 16,893	293,376	125,329	(15,556)	420,042
BALANCE (in shares) at Mar. 31, 2022	16,893,282
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income			10,215		10,215
Other comprehensive income (loss)				(9,092)	(9,092)
Stock options exercised	$ 4	42			$ 46
Stock options exercised (in shares)	3,850				3,850
Restricted stock	$ 1	(1)
Restricted stock (in shares)	1,273
Stock compensation expense		398			$ 398
Common stock dividends			(1,182)		(1,182)
BALANCE at Jun. 30, 2022	$ 16,898	$ 293,815	$ 134,362	$ (24,648)	$ 420,427
BALANCE (in shares) at Jun. 30, 2022	16,898,405