Leases - Schedule of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Property, Plant and Equipment [Line Items]
Operating lease expense – fixed payments	$ 1,215	$ 828	$ 3,482	$ 2,485
Variable lease expense	404	47	971	155
Short-term and other lease expense (includes $53 and $73 recorded in advertising and marketing for the three months ended June 30, 2022 and 2021, respectively, and $183 and $232 for the nine months ended June 30, 2022 and 2021, respectively; and $120 and $106 recorded in repairs and maintenance for the three months ended June 30, 2022 and 2021, respectively, and $310 and $310 for the nine months ended June 30, 2022 and 2021, respectively; see Note 6)	290	296	988	843
Sublease income	(1)	(2)	(4)	(5)
Total lease expense, net	1,908	1,169	5,437	3,478
Operating cash outflows from operating leases	$ 1,855	$ 1,147	$ 5,294	$ 3,400
Weighted average remaining lease term – operating leases	11 years	12 years	11 years	12 years
Weighted average discount rate – operating leases	5.60%	6.00%	5.60%	6.00%
Advertising and marketing	$ 2,460	$ 1,929	$ 7,091	$ 4,502
Repairs and maintenance	960	787	2,588	2,037
Equipment
Property, Plant and Equipment [Line Items]
Advertising and marketing	53	73	183	232
Repairs and maintenance	$ 120	$ 106	$ 310	$ 310