Consolidated Statements of Changes In Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss), net of Tax
Beginning balance (in shares) at Dec. 31, 2022		5,701,000
Beginning balance, value at Dec. 31, 2022	$ 218,629	$ 5,701	$ 17,784	$ 224,225	$ (29,081)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend on common stock	(3,444)			(3,444)
Stock-based compensation expense	140		140
Repurchase of common stock (in shares)		(28,000)
Repurchase of common stock	(1,327)	$ (28)	(1,299)
Other comprehensive gain (loss), net of tax	5,597				5,597
Net income	4,830			4,830
Ending balance (in shares) at Mar. 31, 2023		5,673,000
Ending balance, value at Mar. 31, 2023	224,425	$ 5,673	16,625	225,611	(23,484)
Beginning balance (in shares) at Dec. 31, 2022		5,701,000
Beginning balance, value at Dec. 31, 2022	218,629	$ 5,701	17,784	224,225	(29,081)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive gain (loss), net of tax	4,040
Net income	18,781
Ending balance (in shares) at Sep. 30, 2023		5,548,000
Ending balance, value at Sep. 30, 2023	225,259	$ 5,548	12,005	232,746	(25,040)
Beginning balance (in shares) at Mar. 31, 2023		5,673,000
Beginning balance, value at Mar. 31, 2023	224,425	$ 5,673	16,625	225,611	(23,484)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend on common stock	(3,432)			(3,432)
Stock-based compensation expense	225		225
Repurchase of common stock (in shares)		(62,000)
Repurchase of common stock	(2,501)	$ (62)	(2,439)
Other comprehensive gain (loss), net of tax	(2,958)				(2,958)
Net income	5,577			5,577
Ending balance (in shares) at Jun. 30, 2023		5,611,000
Ending balance, value at Jun. 30, 2023	221,336	$ 5,611	14,411	227,756	(26,442)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend on common stock	(3,384)			(3,384)
Stock-based compensation expense	254		254
Exercise of stock options and vesting of restricted stock units, net	(12)		(12)
Repurchase of common stock (in shares)		(63,000)
Repurchase of common stock	(2,711)	$ (63)	(2,648)
Other comprehensive gain (loss), net of tax	1,402				1,402
Net income	8,374			8,374
Ending balance (in shares) at Sep. 30, 2023		5,548,000
Ending balance, value at Sep. 30, 2023	225,259	$ 5,548	12,005	232,746	(25,040)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend on common stock	(3,322)			(3,322)
Stock-based compensation expense	318		318
Exercise of stock options and vesting of restricted stock units, net (in shares)		21,000
Exercise of stock options and vesting of restricted stock units, net	(248)	$ 21	(269)
Repurchase of common stock (in shares)		(56,000)
Repurchase of common stock	(2,505)	$ (56)	(2,449)
Other comprehensive gain (loss), net of tax	8,603				8,603
Net income	$ 6,613			6,613
Ending balance (in shares) at Dec. 31, 2023	5,513,459	5,513,000
Ending balance, value at Dec. 31, 2023	$ 234,718	$ 5,513	9,605	236,037	(16,437)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend on common stock	(3,388)			(3,388)
Stock-based compensation expense	208		208
Exercise of stock options and vesting of restricted stock units, net (in shares)		1,000
Exercise of stock options and vesting of restricted stock units, net	(26)	$ 1	(27)
Repurchase of common stock (in shares)		(14,000)
Repurchase of common stock	(788)	$ (14)	(774)
Other comprehensive gain (loss), net of tax	404				404
Net income	8,199			8,199
Ending balance (in shares) at Mar. 31, 2024		5,500,000
Ending balance, value at Mar. 31, 2024	$ 239,327	$ 5,500	9,012	240,848	(16,033)
Beginning balance (in shares) at Dec. 31, 2023	5,513,459	5,513,000
Beginning balance, value at Dec. 31, 2023	$ 234,718	$ 5,513	9,605	236,037	(16,437)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive gain (loss), net of tax	9,682
Net income	$ 26,044
Ending balance (in shares) at Sep. 30, 2024	5,501,943	5,502,000
Ending balance, value at Sep. 30, 2024	$ 260,050	$ 5,502	9,460	251,842	(6,754)
Beginning balance (in shares) at Mar. 31, 2024		5,500,000
Beginning balance, value at Mar. 31, 2024	239,327	$ 5,500	9,012	240,848	(16,033)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend on common stock	(3,393)			(3,393)
Stock-based compensation expense	219		219
Exercise of stock options and vesting of restricted stock units, net (in shares)		2,000
Exercise of stock options and vesting of restricted stock units, net	(21)	$ 2	(23)
Other comprehensive gain (loss), net of tax	2,048				2,048
Net income	9,020			9,020
Ending balance (in shares) at Jun. 30, 2024		5,502,000
Ending balance, value at Jun. 30, 2024	247,200	$ 5,502	9,208	246,475	(13,985)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend on common stock	(3,458)			(3,458)
Stock-based compensation expense	265		265
Exercise of stock options and vesting of restricted stock units, net	(13)		(13)
Other comprehensive gain (loss), net of tax	7,231				7,231
Net income	$ 8,825			8,825
Ending balance (in shares) at Sep. 30, 2024	5,501,943	5,502,000
Ending balance, value at Sep. 30, 2024	$ 260,050	$ 5,502	$ 9,460	$ 251,842	$ (6,754)