Note 15 - Common Stock Purchase Agreement (Details Textual) - USD ($)							6 Months Ended
	Sep. 23, 2022	Aug. 23, 2022	Aug. 15, 2022	Aug. 03, 2022	Jul. 25, 2022	Mar. 29, 2022	May 31, 2023	May 31, 2022	Nov. 30, 2022
Common Stock, Par or Stated Value Per Share						$ 0.01	$ 0.01		$ 0.01
Stock Issued During Period, Value, New Issues								$ 117,200
Alumni Capital [Member]
Common Stock Purchase Agreement, Maximum Gross Proceeds from Issuance or Sale of Equity						$ 3,000,000
Stock Issued During Period, Shares, New Issues (in shares)	65,000	65,000	50,000	50,000	50,000	20,000	280,000	20,000
Common Stock Purchase Agreement, Shares to be Issued						20,000
Equity Issuance Cost, Total								$ 134,000
Stock Issued During Period, Value, New Issues								$ 117,000