CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Treasury Shares [Member]	Accumulated Other Comprehensive Income [Member]
Balance Beginning (in shares) at Dec. 31, 2020		12,858,325
Balance beginning at Dec. 31, 2020	$ 240,825	$ 142,443	$ 115,058	$ (20,719)	$ 4,043
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	15,347		15,347
Other comprehensive income, net of taxes	(3,147)				(3,147)
Dividend Reinvestment and Stock Purchase Plan (in shares)		17,199
Dividend Reinvestment and Stock Purchase Plan	303	$ 303
Exercise of stock options (in shares)		311
Exercise of stock options	4	$ 4
Compensation expense relating to restricted stock (in shares)		25,565
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	196	$ 196
Dividends, Common Stock, Cash	(7,238)		(7,238)
Treasury shares purchased (in shares)		(468,072)
Repurchase of common stock	(7,871)			(7,871)
Balance Ending (in shares) at Sep. 30, 2021		12,433,328
Balance ending at Sep. 30, 2021	$ 238,419	$ 142,946	123,167	(28,590)	896
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (usd per share)	$ 0.57
Balance Beginning (in shares) at Jun. 30, 2021		12,634,845
Balance beginning at Jun. 30, 2021	$ 239,952	$ 142,791	120,720	(25,122)	1,563
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,817		4,817
Other comprehensive income, net of taxes	(667)				(667)
Dividend Reinvestment and Stock Purchase Plan (in shares)		6,007
Dividend Reinvestment and Stock Purchase Plan	104	$ 104
Compensation expense relating to restricted stock (in shares)		(756)
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	51	$ 51
Dividends, Common Stock, Cash	(2,370)		(2,370)
Treasury shares purchased (in shares)		(206,768)
Repurchase of common stock	(3,468)
Balance Ending (in shares) at Sep. 30, 2021		12,433,328
Balance ending at Sep. 30, 2021	$ 238,419	$ 142,946	123,167	(28,590)	896
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (usd per share)	$ 0.19
Balance Beginning (in shares) at Dec. 31, 2021	12,414,956	12,414,956
Balance beginning at Dec. 31, 2021	$ 238,604	$ 143,130	126,312	(29,029)	(1,809)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	15,720		15,720
Other comprehensive income, net of taxes	(29,800)				(29,800)
Dividend Reinvestment and Stock Purchase Plan (in shares)		18,585
Dividend Reinvestment and Stock Purchase Plan	308	$ 308
Compensation expense relating to restricted stock (in shares)		32,554
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	417	$ 417
Dividends, Common Stock, Cash	(6,830)		(6,830)
Treasury shares purchased (in shares)		(1,172,456)
Repurchase of common stock	$ (22,980)			(22,980)
Balance Ending (in shares) at Sep. 30, 2022	11,293,639	11,293,639
Balance ending at Sep. 30, 2022	$ 195,439	$ 143,855	135,202	(52,009)	(31,609)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (usd per share)	$ 0.60
Balance Beginning (in shares) at Jun. 30, 2022		11,374,515
Balance beginning at Jun. 30, 2022	$ 202,960	$ 143,635	131,894	(50,629)	(21,940)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,579		5,579
Other comprehensive income, net of taxes	(9,669)				(9,669)
Dividend Reinvestment and Stock Purchase Plan (in shares)		6,857
Dividend Reinvestment and Stock Purchase Plan	107	$ 107
Compensation expense relating to restricted stock (in shares)		0
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	113	$ 113
Dividends, Common Stock, Cash	(2,271)		(2,271)
Treasury shares purchased (in shares)		(87,733)
Repurchase of common stock	$ (1,380)
Balance Ending (in shares) at Sep. 30, 2022	11,293,639	11,293,639
Balance ending at Sep. 30, 2022	$ 195,439	$ 143,855	$ 135,202	$ (52,009)	$ (31,609)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (usd per share)	$ 0.20