Balance Sheet Components - Schedule of Property and Equipment (Details) - USD ($)	Sep. 30, 2024	Sep. 30, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 27,318,000	$ 26,895,000
Less accumulated depreciation and amortization	(10,580,000)	(10,883,000)
Property and equipment, net	16,738,000	16,012,000
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	11,609,000	11,609,000
Building and resort improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,382,000	13,262,000
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,033,000	895,000
Transportation equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,062,000	979,000
Operating lease right of use asset [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	85,000	0
Construction in progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 147,000	$ 150,000