Segment Information - Reconciliation from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting [Abstract]
Total segment gross profit	$ 49,401	$ 45,568	$ 136,431	$ 127,165
Other costs and expenses from operations	40,933	37,315	119,213	108,811
Interest and other income, net	(233)	(777)	(1,469)	(1,609)
Income before provision for income taxes	$ 8,702	$ 9,030	$ 18,687	$ 19,963