Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Income Taxes
Statutory federal tax rate (as a percent)	21.00%	21.00%	21.00%	21.00%
Effective tax rate (as a percent)	21.00%	24.70%	21.60%	25.20%
Income (loss) before income taxes	$ 15,639	$ 11,267	$ 25,623	$ 17,573

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details