Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accounts receivable, credit loss reserve	$ 8,122	$ 8,008
Accumulated depreciation	$ 1,743,783	$ 1,716,283
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	300,000,000	300,000,000
Common stock, shares issued	113,685,000	114,988,000
Common stock, shares outstanding	113,685,000	114,988,000