Leases - Schedule of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Property, Plant and Equipment [Line Items]
Operating lease expense – fixed payments	$ 1,327	$ 1,215	$ 3,874	$ 3,482
Variable lease expense	406	404	1,192	971
Short-term and other lease expense (includes $116 and $53 recorded in advertising and marketing for the three months ended June 30, 2023 and 2022, respectively, and $243 and $183 for the nine months ended June 30, 2023 and 2022, respectively; and $145 and $120 recorded in repairs and maintenance for the three months ended June 30, 2023 and 2022, respectively, and $410 and $310 for the nine months ended June 30, 2023 and 2022, respectively; see Note 6)	364	290	950	988
Sublease income	0	(1)	0	(4)
Total lease expense, net	2,097	1,908	6,016	5,437
Operating cash outflows from operating leases	$ 2,055	$ 1,855	$ 5,885	$ 5,294
Weighted average remaining lease term – operating leases	10 years 8 months 12 days	11 years	10 years 8 months 12 days	11 years
Weighted average discount rate – operating leases	5.80%	5.60%	5.80%	5.60%
Advertising and marketing	$ 3,284	$ 2,460	$ 8,685	$ 7,091
Repairs and maintenance	1,367	960	3,738	2,588
Equipment
Property, Plant and Equipment [Line Items]
Advertising and marketing	116	53	243	183
Repairs and maintenance	$ 145	$ 120	$ 410	$ 310