Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues	$ 341,262	$ 321,196
Costs and Expenses:
Operating (excluding depreciation and amortization)	101,464	105,928
Selling, general and administrative	69,042	62,884
Depreciation and amortization	68,530	65,279
(Gain) loss on asset sales and disposals, net	(120)	(5,621)
Total Costs and Expenses	238,916	228,470
Income from operations	102,346	92,726
Interest expense	(23,581)	(18,674)
Other income (expense), net	8,100	1,734
Income before income taxes and equity method investment income (loss), net	86,865	75,786
Income tax provision	17,715	6,460
Income before equity method investment income (loss), net	69,150	69,326
Equity method investment income (loss), net	(568)	0
Net income	$ 68,582	$ 69,326
Net income per common share:
Basic (in dollars per share)	$ 11.41	$ 12.17
Diluted (in dollars per share)	$ 11.19	$ 12.05
Weighted average common shares outstanding:
Basic (in shares)	6,012,402	5,697,904
Diluted (in shares)	6,168,261	5,755,059
Unrealized gain (loss) on cash flow hedges and other, net of tax	$ 55,467	$ (84,625)
Comprehensive income (loss)	$ 124,049	$ (15,299)