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	10,530		10,530
Other comprehensive income, net of taxes	(2,480)				(2,480)
Dividend Reinvestment and Stock Purchase Plan (in shares)		11,192
Dividend Reinvestment and Stock Purchase Plan	199	$ 199
Exercise of stock options (in shares)		311
Exercise of stock options	4	$ 4
Compensation expense relating to restricted stock (in shares)		26,321
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	145	$ 145
Dividends, Common Stock, Cash	(4,868)		(4,868)
Treasury shares purchased (in shares)		(261,304)
Repurchase of common stock	(4,403)			(4,403)
Balance Ending (in shares) at Jun. 30, 2021		12,634,845
Balance ending at Jun. 30, 2021	$ 239,952	$ 142,791	120,720	(25,122)	1,563
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (usd per share)	$ 0.38
Balance Beginning (in shares) at Mar. 31, 2021		12,820,108
Balance beginning at Mar. 31, 2021	$ 239,246	$ 142,639	117,863	(21,859)	603
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,290		5,290
Other comprehensive income, net of taxes	960				960
Dividend Reinvestment and Stock Purchase Plan (in shares)		5,720
Dividend Reinvestment and Stock Purchase Plan	100	$ 100
Compensation expense relating to restricted stock (in shares)		0
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	52	$ 52
Dividends, Common Stock, Cash	(2,433)		(2,433)
Treasury shares purchased (in shares)		(190,983)
Repurchase of common stock	(3,263)
Balance Ending (in shares) at Jun. 30, 2021		12,634,845
Balance ending at Jun. 30, 2021	$ 239,952	$ 142,791	120,720	(25,122)	1,563
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	10,141		10,141
Other comprehensive income, net of taxes	(20,131)				(20,131)
Dividend Reinvestment and Stock Purchase Plan (in shares)		11,728
Dividend Reinvestment and Stock Purchase Plan	201	$ 201
Compensation expense relating to restricted stock (in shares)		32,554
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	304	$ 304
Dividends, Common Stock, Cash	(4,559)		(4,559)
Treasury shares purchased (in shares)		(1,084,723)
Repurchase of common stock	$ (21,600)			(21,600)
Balance Ending (in shares) at Jun. 30, 2022	11,374,515	11,374,515
Balance ending at Jun. 30, 2022	$ 202,960	$ 143,635	131,894	(50,629)	(21,940)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (usd per share)	$ 0.40
Balance Beginning (in shares) at Mar. 31, 2022		11,401,503
Balance beginning at Mar. 31, 2022	$ 206,875	$ 143,432	128,555	(50,115)	(14,997)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,618		5,618
Other comprehensive income, net of taxes	(6,943)				(6,943)
Dividend Reinvestment and Stock Purchase Plan (in shares)		6,047
Dividend Reinvestment and Stock Purchase Plan	96	$ 96
Compensation expense relating to restricted stock (in shares)		0
APIC, Share-based Payment Arrangement, Restricted Stock Unit, Increase for Cost Recognition	107	$ 107
Dividends, Common Stock, Cash	(2,279)		(2,279)
Treasury shares purchased (in shares)		(33,035)
Repurchase of common stock	$ (514)
Balance Ending (in shares) at Jun. 30, 2022	11,374,515	11,374,515
Balance ending at Jun. 30, 2022	$ 202,960	$ 143,635	$ 131,894	$ (50,629)	$ (21,940)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividends declared per common share (usd per share)	$ 0.20