Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock
Beginning balance at Dec. 31, 2020	$ 577,932	$ 544	$ 63,261	$ 723,365	$ (58,653)	$ (150,585)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	6,937			6,937
Other comprehensive (loss) income	(21,651)				(21,651)
Comprehensive (loss) income	(14,714)
Cash dividends declared	(24,702)			(24,702)
Share-based compensation expense	5,063		5,063
Delivery of treasury shares:
RSUs and PSAs	(815)		(3,538)			2,723
Employee stock options exercised — net	(2)		(7)			5
Ending balance at Dec. 31, 2021	542,762	544	64,779	705,600	(80,304)	(147,857)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(194,208)			(194,208)
Other comprehensive (loss) income	(17,591)				(17,591)
Comprehensive (loss) income	(211,799)
Cash dividends declared	(12,529)			(12,529)
Share-based compensation expense	831		831
Delivery of treasury shares:
RSUs and PSAs	(1,261)		(4,947)			3,686
Ending balance at Dec. 31, 2022	318,004	544	60,663	498,863	(97,895)	(144,171)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(79,053)			(79,053)
Other comprehensive (loss) income	15,386				15,386
Comprehensive (loss) income	(63,667)
Share-based compensation expense	2,797		2,797
Delivery of treasury shares:
RSUs and PSAs	(280)		(4,701)			4,421
Ending balance at Dec. 31, 2023	$ 256,854	$ 544	$ 58,759	$ 419,810	$ (82,509)	$ (139,750)