Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)	Nov. 30, 2025	Nov. 30, 2024
Trade accounts and notes receivable, allowance for doubtful accounts	$ 49,350	$ 51,103
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	159,814	159,414
Definite lived intangible assets, accumulated amortization	$ 146,745	$ 142,664
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.001	$ 0.001
Preferred shares, authorized (in shares)	4,000,000	4,000,000
Preferred Stock, Shares Outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, authorized (in shares)	15,000,000	15,000,000
Common stock, issued (in shares)	8,466,953	8,466,953
Common stock, outstanding (in shares)	7,263,508	7,263,508
Series A Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.001	$ 0.001
Preferred shares, authorized (in shares)	1,000,000	1,000,000
Preferred Stock, Shares Outstanding (in shares)	0	0