Condensed Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	Treasury Stock	Add’l Paid in Capital	Accumulated Comprehensive Income (Loss)	Accumulated Deficit	Non-controlling interest	Series AA PREF Stock Preferred Stock	Class A CMN Stock Common Stock	Class B CMN Stock Common Stock
Beginning balance at Dec. 31, 2021	$ 1,217,089	$ (50,852)	$ 2,001,399	$ 855	$ (734,415)	$ 0	$ 0	$ 88	$ 14
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Non-cash compensation	1,405		1,405
Issuance of common stock through stock awards	30,145		30,145
Exercise of stock options	1,307		1,307
Issuance of common stock through employee purchase plan	3,589		3,589
Purchase of treasury stock	(10,446)	(10,446)
Foreign currency translation	314			314
Net income	92,151				92,151
Dividends/distributions to common shareholders	(111,602)				(111,602)
Dividends, preferred stock	(91)				(91)
Ending balance at Mar. 31, 2022	1,223,861	(61,298)	2,037,845	1,169	(753,957)	0	0	88	14
Beginning balance at Dec. 31, 2021	1,217,089	(50,852)	2,001,399	855	(734,415)	0	0	88	14
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation	(369)
Net income	226,356
Ending balance at Jun. 30, 2022	1,240,066	(61,298)	2,042,427	486	(741,651)	0	0	88	14
Beginning balance at Mar. 31, 2022	1,223,861	(61,298)	2,037,845	1,169	(753,957)	0	0	88	14
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Non-cash compensation	1,356		1,356
Issuance of common stock through stock awards	221		221
Exercise of stock options	599		599
Issuance of common stock through employee purchase plan	2,406		2,406
Foreign currency translation	(683)			(683)
Net income	134,205				134,205
Dividends/distributions to common shareholders	(121,808)				(121,808)
Dividends, preferred stock	(91)				(91)
Ending balance at Jun. 30, 2022	1,240,066	(61,298)	2,042,427	486	(741,651)	0	0	88	14
Beginning balance at Dec. 31, 2022	1,195,374	(61,358)	2,061,671	(659)	(804,382)	0	0	88	14
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Non-cash compensation	3,305		3,305
Issuance of common stock through stock awards	15,934		15,934
Exercise of stock options	678		678
Issuance of common stock through employee purchase plan	3,530		3,530
Purchase of treasury stock	(5,946)	(5,946)
Foreign currency translation	(2)			(2)
Net income	76,198				76,041	157
Reallocation of capital	(619)		(1,016)			397
Dividends/distributions to common shareholders	(127,674)				(127,460)	(214)
Dividends, preferred stock	(91)				(91)
Ending balance at Mar. 31, 2023	1,160,687	(67,304)	2,084,102	(661)	(855,892)	340	0	88	14
Beginning balance at Dec. 31, 2022	1,195,374	(61,358)	2,061,671	(659)	(804,382)	0	0	88	14
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Foreign currency translation	401
Net income	207,086
Ending balance at Jun. 30, 2023	1,170,494	(67,304)	2,090,400	(258)	(852,901)	455	0	88	14
Beginning balance at Mar. 31, 2023	1,160,687	(67,304)	2,084,102	(661)	(855,892)	340	0	88	14
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Non-cash compensation	2,133		2,133
Issuance of common stock through stock awards	681		681
Exercise of stock options	809		809
Issuance of common stock through employee purchase plan	2,675		2,675
Foreign currency translation	403			403
Net income	130,888				130,620	268
Dividends/distributions to common shareholders	(127,691)				(127,538)	(153)
Dividends, preferred stock	(91)				(91)
Ending balance at Jun. 30, 2023	$ 1,170,494	$ (67,304)	$ 2,090,400	$ (258)	$ (852,901)	$ 455	$ 0	$ 88	$ 14