CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Adjusted Balance	Common Stock	Common Stock Adjusted Balance	Additional Paid-in Capital	Additional Paid-in Capital Adjusted Balance	Retained Earnings	Retained Earnings Adjusted Balance	Treasury Stock	Treasury Stock Adjusted Balance	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss) Adjusted Balance
Beginning balance at Dec. 31, 2020		$ 261,160		$ 7,753		$ 204,875		$ 99,062		$ (50,515)		$ (15)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 28,604						$ 28,604
Cash dividends	(15,446)						(15,446)
Issuance of common shares pursuant to stock-based compensation plan, net	(690)				$ (2,939)				$ 2,249
Exercise of SARs	(160)				(519)				359
Stock-based compensation expense	2,859				2,859
Purchase of common shares	(30,997)								(30,997)
Other comprehensive income (loss)	468										$ 468
Ending balance at Dec. 31, 2021	245,798		$ 7,753		204,276		112,220		(78,904)		453
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	34,904						34,904
Cash dividends	(15,442)						(15,442)
Issuance of common shares pursuant to stock-based compensation plan, net	(313)				(2,727)				2,414
Exercise of SARs	(281)				(859)				578
Stock-based compensation expense	6,732				6,732
Purchase of common shares	(5,299)								(5,299)
Other comprehensive income (loss)	(59,774)										(59,774)
Ending balance at Dec. 31, 2022	206,325		7,753		207,422		131,682		(81,211)		(59,321)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	30,059						30,059
Cash dividends	(15,959)						(15,959)
Issuance of common shares pursuant to stock-based compensation plan, net	(718)				(3,334)				2,616
Exercise of SARs	(116)				(238)				122
Stock-based compensation expense	4,139				4,157				(18)
Purchase of common shares	(5,773)								(5,773)
Other comprehensive income (loss)	11,852										11,852
Ending balance at Dec. 31, 2023	$ 229,809		$ 7,753		$ 208,007		$ 145,782		$ (84,264)		$ (47,469)