Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation	$ 851,015	$ 723,060
Intangible assets, accumulated amortization	$ 40,737	$ 35,333
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock authorized (in shares)	500,000,000	500,000,000
Common stock issued (in shares)	214,093,000	214,093,000
Common stock outstanding (in shares)	212,410,000	212,410,000