CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
PROPERTY, PLANT AND EQUIPMENT
Accumulated depreciation of Palo Verde sale leaseback	$ 264,624	$ 260,754
Accumulated amortization on intangible assets	885,505	817,961
Accumulated amortization on nuclear fuel	$ 118,074	$ 126,157
EQUITY
Common stock, authorized shares (in shares)	150,000,000	150,000,000
Common stock, issued shares (in shares)	113,537,689	113,247,189
Treasury stock (in shares)	113,272	73,613