STATEMENTS OF SHAREHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands		Total	Class A common stock	Class B common stock	Common stock Class A common stock	Common stock Class B common stock	Additional paid-in-capital	Accumulated other comprehensive income (loss)	Retained earnings	Retained earnings Class A common stock	Retained earnings Class B common stock	Treasury stock	Deferred compensation
Beginning balance at Dec. 31, 2021		$ 1,342,478			$ 1,992	$ 178	$ 16,496	$ (25,288)	$ 2,495,190			$ (1,167,828)	$ 21,738
Increase (decrease) in shareholders' equity
Net income		68,619							68,619
Other comprehensive income (loss)		(25,189)						(25,189)
Dividends declared:			$ (51,270)	$ (423)						$ (51,270)	$ (423)
Net purchase of treasury stock	[1]	(15)					(15)					0
Deferred compensation		0										(802)	802
Rabbi trust distribution	[2]	0										298	(298)
Ending balance at Mar. 31, 2022		1,334,200			1,992	178	16,481	(50,477)	2,512,116			(1,168,332)	22,242
Beginning balance at Dec. 31, 2022		1,448,408			1,992	178	16,481	(7,414)	2,583,261			(1,168,949)	22,859
Increase (decrease) in shareholders' equity
Net income		86,241							86,241
Other comprehensive income (loss)		7,752						7,752
Dividends declared:			$ (54,965)	$ (454)						$ (54,965)	$ (454)
Net purchase of treasury stock	[1]	(15)					(15)					0
Deferred compensation		0										(822)	822
Rabbi trust distribution	[2]	0										416	(416)
Ending balance at Mar. 31, 2023		$ 1,486,967			$ 1,992	$ 178	$ 16,466	$ 338	$ 2,614,083			$ (1,169,355)	$ 23,265

[1] Net purchases of treasury stock in 2023 and 2022 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 two incentive compensation deferral plan participants in 2023 and one in 2022.