Pension Plan and Employee Benefits - Schedule of 401 (K) Plans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Defined Contribution Plan Disclosure [Line Items]
401(k) Plan expense	$ 1,741	$ 1,838	$ 5,821	$ 5,540
Affiliated entity
Defined Contribution Plan Disclosure [Line Items]
401(k) Plan expense	$ 592	$ 643	$ 2,164	$ 2,092