Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 39,395	$ 52,619
Receivables, net of allowance for doubtful accounts of $12,220 and $11,418 in 2023 and 2022, respectively	310,170	285,039
Other current assets	28,601	26,894
Total current assets	378,166	364,552
Property, plant and equipment	4,236,573	4,109,146
Less accumulated depreciation and amortization	(2,691,274)	(2,609,447)
Net property, plant and equipment	1,545,299	1,499,699
Operating lease right of use assets	1,320,925	1,271,631
Financing lease right of use assets	11,897	14,037
Goodwill	2,035,213	2,035,269
Intangible assets, net	1,195,367	1,206,625
Other assets	85,455	83,401
Total assets	6,572,322	6,475,214
Current liabilities:
Trade accounts payable	17,592	19,643
Current maturities of long-term debt, net of deferred financing costs of $440 and $593 in 2023 and 2022, respectively	247,053	249,785
Current operating lease liabilities	184,620	205,838
Current financing lease liabilities	1,331	1,331
Accrued expenses	96,290	117,593
Deferred income	143,354	131,847
Total current liabilities	690,240	726,037
Long-term debt, net of deferred financing costs of $30,341 and $32,022 in 2023 and 2022, respectively	3,154,652	3,063,020
Operating lease liabilities	1,078,545	1,035,655
Financing lease liabilities	14,947	15,945
Deferred income tax liabilities	10,554	9,651
Asset retirement obligation	397,041	390,442
Other liabilities	39,501	39,090
Total liabilities	5,385,480	5,279,840
Stockholders’ equity:
Preferred stock, value	0	0
Additional paid-in capital	2,095,477	2,061,671
Accumulated comprehensive loss	(901)	(659)
Accumulated deficit	(840,557)	(804,382)
Cost of shares held in treasury, 840,935 and 783,696 shares at 2023 and 2022, respectively	(67,347)	(61,358)
Non-controlling interest	68	0
Stockholder's equity	1,186,842	1,195,374
Total liabilities and stockholders’ equity	6,572,322	6,475,214
Common Class A
Stockholders’ equity:
Common stock, value	88	88
Common Class B
Stockholders’ equity:
Common stock, value	$ 14	$ 14