CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]	Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Common Stock [Member]	Common Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Surplus [Member]	Surplus [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Treasury Stock [Member]	Treasury Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Other Comprehensive Loss [Member] Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Balance at Dec. 31, 2020	$ 527,122			$ 16,958		$ 326,592		$ (36,477)		$ 221,441			$ (1,392)
Net income	41,767									41,767
Comprehensive loss	(7,643)												(7,643)
Restricted stock units issued shares				240		(240)
Restricted stock units repurchased on vesting to pay taxes	(2,231)			(60)		(2,171)
Amortization of restricted stock units	5,229					5,229
Cash dividends declared on common stock ($0.05 per share)	(2,843)									(2,843)
Share repurchase	(19,416)							(19,416)
Common stock options exercised shares	40			3		37
Exercise of warrants				14		(14)
Issuance of shares for Employee Stock Purchase Plan	656			18		638
Issuance of common stock for acquisition	333			12		321
Balance at Sep. 30, 2021	543,014			17,185		330,392		(55,893)		260,365			(9,035)
Balance at Jun. 30, 2021	538,459			17,164		328,035		(48,461)		247,136			(5,415)
Net income	14,171									14,171
Comprehensive loss	(3,620)												(3,620)
Amortization of restricted stock units	1,807					1,807
Cash dividends declared on common stock ($0.05 per share)	(942)									(942)
Share repurchase	(7,432)							(7,432)
Common stock options exercised shares	6			1		5
Exercise of warrants				2		(2)
Issuance of shares for Employee Stock Purchase Plan	232			6		226
Issuance of common stock for acquisition	333			12		321
Balance at Sep. 30, 2021	543,014			17,185		330,392		(55,893)		260,365			(9,035)
Balance at Dec. 31, 2021	546,388		$ 550,297	17,220	$ 17,220	332,358	$ 332,358	(65,104)	$ (65,104)	274,288		$ 278,197	(12,374)	$ (12,374)
Balance (ASU 2016-13 [Member]) at Dec. 31, 2021		$ 3,909									$ 3,909
Net income	53,667									53,667
Comprehensive loss	(62,609)												(62,609)
Restricted stock units issued shares				270		(270)
Restricted stock units repurchased on vesting to pay taxes	(2,701)			(62)		(2,639)
Amortization of restricted stock units	6,300					6,300
Cash dividends declared on common stock ($0.05 per share)	(2,748)									(2,748)
Share repurchase	(27,533)							(27,533)
Common stock options exercised shares	126			8		118
Exercise of warrants	0			18		(18)
Issuance of shares for Employee Stock Purchase Plan	715			18		697
Issuance of common stock for acquisition				12		(12)
Balance at Sep. 30, 2022	515,514			17,484		336,534		(92,637)		329,116			(74,983)
Balance at Jun. 30, 2022	520,324			17,466		334,411		(82,725)		309,899			(58,727)
Net income	20,126									20,126
Comprehensive loss	(16,256)												(16,256)
Amortization of restricted stock units	1,909					1,909
Cash dividends declared on common stock ($0.05 per share)	(909)									(909)
Share repurchase	(9,912)							(9,912)
Common stock options exercised shares	4					4
Issuance of shares for Employee Stock Purchase Plan	228			6		222
Issuance of common stock for acquisition				12		(12)
Balance at Sep. 30, 2022	$ 515,514			$ 17,484		$ 336,534		$ (92,637)		$ 329,116			$ (74,983)