Note 15 - Common Stock Purchase Agreement (Details Textual) - USD ($)		6 Months Ended
	Mar. 29, 2022	May 31, 2022	Nov. 30, 2021
Common Stock, Par or Stated Value Per Share		$ 0.01	$ 0.01
Alumni Capital [Member]
Common Stock Purchase Agreement, Maximum Gross Proceeds from Issuance or Sale of Equity	$ 3,000,000
Common Stock Purchase Agreement, Maximum Shares Authorized to be Issued	50,000
Common Stock Purchase Agreement, Percentage of Common Shares Outstanding	9.99%
Stock Issued During Period, Shares, New Issues	20,000	20,000
Common Stock Purchase Agreement, Shares to be Issued	20,000
Equity Issuance Cost, Total		$ 134,000
Share Price		$ 5.86
Alumni Capital [Member] | Minimum [Member]
Common Stock Purchase Agreement, Discount on Shares, Percent	3.00%
Alumni Capital [Member] | Maximum [Member]
Common Stock Purchase Agreement, Discount on Shares, Percent	5.00%