Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statements of Income
Net revenues	$ 517,852	$ 445,052	$ 969,240	$ 815,933
Operating expenses (income)
Direct advertising expenses (exclusive of depreciation and amortization)	166,723	140,448	324,495	271,663
General and administrative expenses (exclusive of depreciation and amortization)	90,658	75,834	173,742	148,483
Corporate expenses (exclusive of depreciation and amortization)	27,591	20,643	49,603	38,403
Depreciation and amortization	67,750	60,622	136,377	121,371
Gain on disposition of assets	(1,374)	(1,481)	(1,937)	(1,896)
Total operating expenses	351,348	296,066	682,280	578,024
Operating income	166,504	148,986	286,960	237,909
Other expense (income)
Loss on extinguishment of debt	0	0	0	21,604
Interest income	(279)	(182)	(494)	(356)
Interest expense	29,493	26,359	56,279	54,513
Equity in earnings of investee	(355)	0	(1,101)	0
Total other expense (income)	28,859	26,177	54,684	75,761
Income before income tax expense	137,645	122,809	232,276	162,148
Income tax expense	3,440	3,200	5,920	4,210
Net income	134,205	119,609	226,356	157,938
Cash dividends declared and paid on preferred stock	91	91	182	182
Net income applicable to common stock	$ 134,114	$ 119,518	$ 226,174	$ 157,756
Earnings per share:
Basic earnings per share (in dollars per share)	$ 1.32	$ 1.18	$ 2.23	$ 1.56
Diluted earnings per share (in dollars per share)	1.32	1.18	2.23	1.56
Cash dividends declared per share of common stock (in dollars per share)	$ 1.20	$ 0.75	$ 2.30	$ 1.50
Weighted average common shares used in computing earnings per share:
Weighted average common shares outstanding basic (in shares)	101,486,547	101,125,855	101,413,458	101,047,295
Weighted average common shares outstanding diluted (in shares)	101,660,120	101,328,939	101,602,743	101,239,848
Statements of Comprehensive Income
Net income	$ 134,205	$ 119,609	$ 226,356	$ 157,938
Other comprehensive (loss) income
Foreign currency translation adjustments	(683)	300	(369)	504
Comprehensive income	$ 133,522	$ 119,909	$ 225,987	$ 158,442