Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2021		6,015,000
Beginning balance, value at Dec. 31, 2021	$ 237,817	$ 6,015	$ 31,162	$ 204,046	$ (3,406)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividend declared	(10,562)			(10,562)
Stock-based compensation expense	742		742
Exercise of stock options and vesting of restricted stock units, net (in shares)		20,000
Exercise of stock options and vesting of restricted stock units, net	(277)	$ 20	(297)
Repurchase of common stock (in shares)		(334,000)
Repurchase of common stock	(14,157)	$ (334)	(13,823)
Other comprehensive income (loss), net of tax	(25,675)				(25,675)
Net income	30,741			30,741
Ending balance (in shares) at Dec. 31, 2022		5,701,000
Ending 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 declared	(13,582)			(13,582)
Stock-based compensation expense	937		937
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	(260)	$ 21	(281)
Repurchase of common stock (in shares)		(209,000)
Repurchase of common stock	(9,044)	$ (209)	(8,835)
Other comprehensive income (loss), net of tax	12,644				12,644
Net income	$ 25,394			25,394
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 declared	(13,697)			(13,697)
Stock-based compensation expense	913		913
Exercise of stock options and vesting of restricted stock units, net (in shares)		20,000
Exercise of stock options and vesting of restricted stock units, net	(413)	$ 20	(433)
Repurchase of common stock (in shares)		(15,000)
Repurchase of common stock	(789)	$ (15)	(774)
Other comprehensive income (loss), net of tax	9,413				9,413
Net income	$ 36,971			36,971
Ending balance (in shares) at Dec. 31, 2024	5,518,210	5,518,000
Ending balance, value at Dec. 31, 2024	$ 267,116	$ 5,518	$ 9,311	$ 259,311	$ (7,024)