Condensed Consolidated Balance Sheets (unaudited)  (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Assets
Property, plant and equipment, accumulated depreciation	$ 3,571,501	$ 3,518,501
Shareholders’ equity
Preferred stock, authorized shares (in shares)	10,000,000	10,000,000
Preferred stock, issued shares (in shares)	0	0
Common stock, authorized shares (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	172,635,624	172,620,476
Common stock, shares outstanding (in shares)	172,635,624	172,620,476