Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Surplus	Accumulated Other Comprehensive (Loss) Income	Undivided Profits
Balance at Dec. 31, 2020	$ 2,976,656	$ 767	$ 1,081	$ 2,014,076	$ 59,726	$ 901,006
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss) income	151,763				(71,155)	222,918
Stock issued for employee stock purchase plan	1,170		1	1,169
Stock-based compensation plans, net	13,813		3	13,810
Stock repurchases	(54,513)		(19)	(54,494)
Dividends on preferred stock	(39)					(39)
Dividends on common stock	(58,319)					(58,319)
Balance at Sep. 30, 2021	3,030,531	767	1,066	1,974,561	(11,429)	1,065,566
Balance at Jun. 30, 2021	3,039,366	767	1,084	2,021,128	12,073	1,004,314
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss) income	57,072				(23,502)	80,574
Stock-based compensation plans, net	4,848			4,848
Stock repurchases	(51,433)		(18)	(51,415)
Dividends on preferred stock	(13)					(13)
Dividends on common stock	(19,309)					(19,309)
Balance at Sep. 30, 2021	3,030,531	767	1,066	1,974,561	(11,429)	1,065,566
Balance at Dec. 31, 2021	3,248,841	0	1,127	2,164,989	(10,545)	1,093,270
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss) income	(384,033)				(557,185)	173,152
Stock issued for employee stock purchase plan	1,151		1	1,150
Stock-based compensation plans, net	7,370		2	7,368
Stock issued for Spirit acquisition	464,918		183	464,735
Stock repurchases	(111,133)		(44)	(111,089)
Dividends on common stock	(69,963)					(69,963)
Balance at Sep. 30, 2022	3,157,151	0	1,269	2,527,153	(567,730)	1,196,459
Balance at Jun. 30, 2022	3,259,895	0	1,288	2,569,060	(450,428)	1,139,975
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Comprehensive (loss) income	(36,699)				(117,302)	80,603
Stock-based compensation plans, net	3,111			3,111
Stock repurchases	(45,037)		(19)	(45,018)
Dividends on common stock	(24,119)					(24,119)
Balance at Sep. 30, 2022	$ 3,157,151	$ 0	$ 1,269	$ 2,527,153	$ (567,730)	$ 1,196,459