3. Impact of the COVID-19 Pandemic (Details) - USD ($)					3 Months Ended
	Mar. 08, 2021	Mar. 05, 2021	Feb. 12, 2021	Jul. 31, 2020	Jan. 31, 2021
Payroll Taxes Subject To Deferred Payment Under The Cares Act					$ 139,000
CARES Act Payroll Support Program
Proceeds from Loans	$ 655,000	$ 1,310,000	$ 875,000	$ 3,003,000