Consolidated Statements Of Changes In Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Treasury Stock, Common	Accumulated Other Comprehensive Income (Loss) [Member]	Non-Controlling Interest [Member]
Balance at Dec. 31, 2022	$ 2,481,577	$ 629,319	$ 2,932,959	$ 31,620	$ (41,743)	$ (1,086,864)	$ 16,286
Net income	120,553			119,452			1,101
Other comprehensive income (loss)	146,366					146,366
Distributions to non-controlling interest	(453)						(453)
Purchase of treasury stock	(36,245)				(36,245)
Sale of non-controlling interest of subsidiary	0		46				(46)
Stock Issued During Period RSAs and SARs	0		(18,318)		18,318
Stock-based compensation	4,373		4,373
Cash dividends per share, Common Stock, Cash	(33,759)			(33,759)
Balance at Mar. 31, 2023	2,682,412	629,319	2,919,060	117,313	(59,670)	(940,498)	16,888
Balance at Dec. 31, 2023	2,964,230	655,322	3,162,622	53,183	(35,599)	(891,412)	20,114
Net income	115,452			112,663			2,789
Other comprehensive income (loss)	(39,615)					(39,615)
Distributions to non-controlling interest	(2,990)						(2,990)
Purchase of treasury stock	(42,314)				(42,314)
Stock Issued During Period RSAs and SARs	0		(18,239)		18,239
Stock-based compensation	4,266		4,266
Cash dividends per share, Common Stock, Cash	(35,140)			(35,140)
Balance at Mar. 31, 2024	$ 2,963,889	$ 655,322	$ 3,148,649	$ 130,706	$ (59,674)	$ (931,027)	$ 19,913