CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning Balance (in shares) at Dec. 31, 2020		14,909,097
Beginning Balance at Dec. 31, 2020	$ 529,314	$ 131,072	$ 377,502	$ 20,740
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	19,740		19,740
Other comprehensive income, net of tax	(12,175)			(12,175)
Stock-based compensation expense	703	$ 703
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings and tax benefit (shares)		19,337
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings	(80)	$ (80)
Common stock repurchased (in shares)		0
Common stock repurchased	0	$ 0
Cash dividends declared	(5,382)		(5,382)
Ending Balance (in shares) at Mar. 31, 2021		14,928,434
Ending Balance at Mar. 31, 2021	532,120	$ 131,695	391,860	8,565
Beginning Balance (in shares) at Dec. 31, 2021		14,739,956
Beginning Balance at Dec. 31, 2021	541,294	$ 123,111	424,412	(6,229)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	16,795		16,795
Other comprehensive income, net of tax	(69,684)			(69,684)
Stock-based compensation expense	624	$ 624
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings and tax benefit (shares)		19,540
Exercise of stock options and issuance of vested share awards, net of repurchase for tax withholdings	(114)	$ (114)
Common stock repurchased (in shares)		(13,086)
Common stock repurchased	(609)	$ (609)
Cash dividends declared	(5,860)		(5,860)
Ending Balance (in shares) at Mar. 31, 2022		14,746,410
Ending Balance at Mar. 31, 2022	$ 482,446	$ 123,012	$ 435,347	$ (75,913)