Income Taxes - Schedule of Income Tax Expense from Continuing Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Current
Federal	$ 5,764	$ (1,274)	$ 2,849
State	13,964	13,550	28,125
Deferred
Federal	150,244	83,244	43,435
State	22,909	18,259	3,101
Income tax expense	$ 192,881	$ 113,779	$ 77,510