CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation	$ 4,866,988	$ 4,763,135
Intangible assets, accumulated amortization	$ 64,525	$ 60,730
Preferred stock, par value (usd per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000	5,000
Preferred stock, issued (in shares)	0	0
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	450,000	450,000
Common stock, shares issued (in shares)	97,342	97,289
Common stock, shares outstanding (in shares)	95,238	97,289
Treasury Stock, Common, Shares	2,104	0