2. Basis of Presentation and Significant Accounting Policies: Liquidity (Details) - USD ($)									3 Months Ended		6 Months Ended
	May 27, 2021	Apr. 29, 2021	Apr. 26, 2021	Apr. 16, 2021	Mar. 08, 2021	Mar. 05, 2021	Feb. 12, 2021	Jul. 31, 2020	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Current Assets Exceed Current Liabilities, Excluding Deferred Revenue									$ 254,000		$ 254,000
Proceeds from Grantors												$ 531,000
Shareholders' Deficit, rounded									12,666,000		12,666,000
Net Income/(loss), rounded									(1,375,000)	$ (50,000)	(1,805,000)	85,000
Accrued Liabilities And Other Liabilities Rounded									$ 0	$ 856,000	0	856,000
Federal Stimulus Credits Utilized Rounded											$ 0	1,172,000
Accrued Interest on Existing Gilbert Note
Debt Instrument, Increase, Accrued Interest												$ 1,057,000
CARES Act Payroll Support Program
Proceeds from Loans	$ 655,000	$ 655,000	$ 655,000	$ 1,310,000	$ 655,000	$ 1,310,000	$ 875,000	$ 3,003,000