Leases - Schedule of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Lessee, Lease, Description [Line Items]
Operating lease expense – fixed payments	$ 4,423	$ 5,029	$ 5,166
Variable lease expense	1,612	1,707	1,629
Short-term lease cost	1,329	1,416	1,325
Total lease expense, net	7,364	8,152	8,120
Operating cash outflows from operating leases	$ 7,665	$ 8,154	$ 7,949
Weighted average remaining lease term	8 years 10 months 24 days	9 years 4 months 24 days	10 years 6 months
Weighted average discount rate	5.80%	5.70%	5.80%
Advertising and marketing	$ 11,512	$ 12,461	$ 11,928
Repairs and maintenance	5,090	4,690	4,924
Equipment
Lessee, Lease, Description [Line Items]
Advertising and marketing	390	448	357
Repairs and maintenance	$ 568	$ 605	$ 557