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, 2021	$ 3,448,324	$ 610,804	$ 2,689,894	$ 92,493	$ (32,973)	$ 77,080	$ 11,026
Net income	120,026			118,154			1,872
Other comprehensive income (loss)	(511,480)					(511,480)
Distributions to non-controlling interest	(136)						(136)
Purchase of treasury stock	(55,855)				(55,855)
Stock Issued During Period RSAs and SARs	448		(16,087)		16,535
Stock-based compensation	4,218		4,218
Cash dividends per share, Common Stock, Cash	(32,143)			(32,143)
Balance at Mar. 31, 2022	2,973,402	610,804	2,678,025	178,504	(72,293)	(434,400)	12,762
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