Revenues - Schedule of Reconciliation of Contract Liabilities with Customers (Details) $ in Thousands	9 Months Ended
	Jun. 30, 2023 USD ($)
Contract With Customer Liability [Roll Forward]
Contract liabilities with customers, beginning	$ 234
Net Consideration Received (Refunded)	806
Recognized in Revenue	(416)
Contract liabilities with customers, ending	624
Ad revenue
Contract With Customer Liability [Roll Forward]
Contract liabilities with customers, beginning	82
Net Consideration Received (Refunded)	375
Recognized in Revenue	(370)
Contract liabilities with customers, ending	87
Expo revenue
Contract With Customer Liability [Roll Forward]
Contract liabilities with customers, beginning	8
Net Consideration Received (Refunded)	456
Recognized in Revenue	0
Contract liabilities with customers, ending	464
Franchise fees and other
Contract With Customer Liability [Roll Forward]
Contract liabilities with customers, beginning	144
Net Consideration Received (Refunded)	(25)
Recognized in Revenue	(46)
Contract liabilities with customers, ending	$ 73