Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Accounts receivable, credit loss reserve	$ 4,316	$ 4,471
Accumulated depreciation	$ 1,952,722	$ 1,905,508
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	107,311,000	109,861,000
Common stock, shares outstanding	107,311,000	109,861,000