CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands		Total	Additional paid-in-capital	Accumulated other comprehensive (loss) income	Retained earnings	Treasury stock	Deferred compensation	Class A common stock	Class A common stock Common stock	Class A common stock Retained earnings	Class B common stock	Class B common stock Common stock	Class B common stock Retained earnings
Net of tax, beginning balance at Dec. 31, 2023		$ 1,662,835	$ 16,466	$ (13,400)	$ 2,803,689	$ (1,169,165)	$ 23,075		$ 1,992			$ 178
Increase (decrease) in shareholders' equity
Net income		124,552			124,552
Other comprehensive income (loss)		(1,830)		(1,830)
Dividends declared								$ (58,891)		$ (58,891)	$ (486)		$ (486)
Net purchase of treasury stock	[1]	0	0			0
Deferred compensation		0				(861)	861
Rabbi trust distribution	[2]	0				709	(709)
Net of tax, ending balance at Mar. 31, 2024		1,726,180	16,466	(15,230)	2,868,864	(1,169,317)	23,227		1,992			178
Net of tax, beginning balance at Dec. 31, 2023		1,662,835	16,466	(13,400)	2,803,689	(1,169,165)	23,075		1,992			178
Increase (decrease) in shareholders' equity
Net income		448,285
Other comprehensive income (loss)		14,966
Net of tax, ending balance at Sep. 30, 2024		1,947,955	16,466	1,566	3,073,843	(1,168,719)	22,629		1,992			178
Net of tax, beginning balance at Mar. 31, 2024		1,726,180	16,466	(15,230)	2,868,864	(1,169,317)	23,227		1,992			178
Increase (decrease) in shareholders' equity
Net income		163,903			163,903
Other comprehensive income (loss)		(1,893)		(1,893)
Dividends declared								(58,891)		(58,891)	(486)		(486)
Net purchase of treasury stock	[1]	0	0			0
Deferred compensation		0				(518)	518
Rabbi trust distribution	[2]	0				1,538	(1,538)
Net of tax, ending balance at Jun. 30, 2024		1,828,813	16,466	(17,123)	2,973,390	(1,168,297)	22,207		1,992			178
Increase (decrease) in shareholders' equity
Net income		159,830			159,830
Other comprehensive income (loss)		18,689		18,689
Dividends declared								(58,891)		(58,891)	(486)		(486)
Net purchase of treasury stock	[1]	0	0			0
Deferred compensation		0				(422)	422
Net of tax, ending balance at Sep. 30, 2024		1,947,955	16,466	1,566	3,073,843	(1,168,719)	22,629		1,992			178
Net of tax, beginning balance at Dec. 31, 2024		1,987,258	16,466	(47,591)	3,162,303	(1,169,074)	22,984		1,992			178
Increase (decrease) in shareholders' equity
Net income		138,417			138,417
Other comprehensive income (loss)		5,217		5,217
Dividends declared								(63,048)		(63,048)	(521)		(521)
Net purchase of treasury stock	[3]	28	28			0
Deferred compensation		0				(869)	869
Rabbi trust distribution	[4]	0				407	(407)
Net of tax, ending balance at Mar. 31, 2025		2,067,351	16,494	(42,374)	3,237,151	(1,169,536)	23,446		1,992			178
Net of tax, beginning balance at Dec. 31, 2024		1,987,258	16,466	(47,591)	3,162,303	(1,169,074)	22,984		1,992			178
Increase (decrease) in shareholders' equity
Net income		495,955
Other comprehensive income (loss)		16,344
Net of tax, ending balance at Sep. 30, 2025		2,308,878	16,494	(31,247)	3,467,551	(1,170,699)	24,609		1,992			178
Net of tax, beginning balance at Mar. 31, 2025		2,067,351	16,494	(42,374)	3,237,151	(1,169,536)	23,446		1,992			178
Increase (decrease) in shareholders' equity
Net income		174,685			174,685
Other comprehensive income (loss)		6,078		6,078
Dividends declared								(63,048)		(63,048)	(521)		(521)
Net purchase of treasury stock	[3]	0	0			0
Deferred compensation		0				(963)	963
Rabbi trust distribution	[4]	0				167	(167)
Net of tax, ending balance at Jun. 30, 2025		2,184,545	16,494	(36,296)	3,348,267	(1,170,332)	24,242		1,992			178
Increase (decrease) in shareholders' equity
Net income		182,853			182,853
Other comprehensive income (loss)		5,049		5,049
Dividends declared								$ (63,048)		$ (63,048)	$ (521)		$ (521)
Deferred compensation		0				(367)	367
Net of tax, ending balance at Sep. 30, 2025		$ 2,308,878	$ 16,494	$ (31,247)	$ 3,467,551	$ (1,170,699)	$ 24,609		$ 1,992			$ 178

[1] Net purchases of treasury stock in 2024 include the repurchase of our Class A common stock in the open market that were subsequently distributed to satisfy stock-based compensation awards.

[2] Distributions of our Class A shares were made from the rabbi trust to five incentive compensation deferral plan participants in 2024.

[3] Net purchases of treasury stock in 2025 include the repurchase of our Class A common stock in the open market that were subsequently distributed to satisfy stock-based compensation awards.

[4] Distributions of our Class A shares were made from the rabbi trust to three incentive compensation deferral plan participants in 2025.