Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Oct. 01, 2024	Oct. 01, 2023	Sep. 30, 2023
Summary Of Significant Accounting Policies [Line Items]
Resort operations revenue included in customer deposits			$ 2,310,000	$ 2,084,000
Tourism taxes payable	$ 82,000	$ 80,000
Allowance for credit losses	29,000	20,000
Provision for expected credit losses	9,000	5,000
Cumulative change due to adoption of ASU 2016-13		15,000
Accounts receivable, net of allowance for credit losses	35,000	45,000		$ 56,000
Cash and cash equivalents	13,283,000	10,786,000			$ 9,293,000
Federally insured limit amount	250,000
Treasury instruments		1,098,000
Advertising expense	33,000	61,000
Retained Earnings [Member]
Summary Of Significant Accounting Policies [Line Items]
Cumulative change due to adoption of ASU 2016-13	$ 15,000	$ 15,000