Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	AOCI Attributable to Parent [Member]
Balance at beginning of period at Dec. 31, 2022	$ 360,452	$ 22,946	$ 122,296	$ 325,625	$ 15	$ (110,430)
Cash dividends declared	(17,303)			(17,303)
Issuance of shares of common stock pursuant to dividend reinvestment plan	12,978	377	12,601
Issuance of shares of common stock pursuant to exercise of stock options	550	29	521
Share based compensation expense	727		727
Net change in fair value of available-for-sale securities during the year, net of taxes	(10,063)					(10,063)
Net earnings (loss) for the quarter	37,757			37,716	41
Balance at end of period at Sep. 30, 2023	385,098	23,352	136,145	346,038	56	(120,493)
Balance at beginning of period at Jun. 30, 2023	394,687	23,159	129,526	343,250	63	(101,311)
Cash dividends declared	(8,698)			(8,698)
Issuance of shares of common stock pursuant to dividend reinvestment plan	6,412	183	6,229
Issuance of shares of common stock pursuant to exercise of stock options	146	10	136
Share based compensation expense	254		254
Net change in fair value of available-for-sale securities during the year, net of taxes	(19,182)					(19,182)
Net earnings (loss) for the quarter	11,479			11,486	(7)
Balance at end of period at Sep. 30, 2023	385,098	23,352	136,145	346,038	56	(120,493)
Balance at beginning of period at Dec. 31, 2023	429,405	23,373	136,866	357,260	69	(88,163)
Cash dividends declared	(20,552)			(20,552)
Issuance of shares of common stock pursuant to dividend reinvestment plan	14,731	406	14,325
Issuance of shares of common stock pursuant to exercise of stock options	81	7	74
Vesting of performance stock units		1	(1)
Vesting of restricted stock units		5	(5)
Repurchase of common shares	(2,181)	(60)	(2,121)
Share based compensation expense	842		842
Net change in fair value of available-for-sale securities during the year, net of taxes	19,474					19,474
Net earnings (loss) for the quarter	41,683			41,591	92
Balance at end of period at Sep. 30, 2024	483,483	23,732	149,980	378,299	161	(68,689)
Balance at beginning of period at Jun. 30, 2024	449,057	23,504	141,657	377,390	136	(93,630)
Cash dividends declared	(11,777)			(11,777)
Issuance of shares of common stock pursuant to dividend reinvestment plan	8,326	227	8,099
Issuance of shares of common stock pursuant to exercise of stock options	(28)	1	(29)
Share based compensation expense	253		253
Net change in fair value of available-for-sale securities during the year, net of taxes	24,941					24,941
Net earnings (loss) for the quarter	12,711			12,686	25
Balance at end of period at Sep. 30, 2024	$ 483,483	$ 23,732	$ 149,980	$ 378,299	$ 161	$ (68,689)