CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
PROPERTY, PLANT AND EQUIPMENT
Accumulated depreciation of Palo Verde sale leaseback	$ 260,754	$ 256,884
Accumulated amortization on intangible assets	817,961	737,694
Accumulated amortization on nuclear fuel	$ 126,157	$ 133,122
EQUITY
Common stock, authorized shares (in shares)	150,000,000	150,000,000
Common stock, issued shares (in shares)	113,247,189	113,014,528
Treasury stock (in shares)	73,613	87,608