Note 5 - Contracts in Progress - Long-term Contracts (Details) - USD ($)	Nov. 30, 2023	Nov. 30, 2022
Costs in Excess of Billings, Cost	$ 839,161	$ 848,516
Billings in Excess of Costs, Costs	3,228,941	731,490
Costs in Excess of Billings, Estimated Earnings	299,230	293,094
Billings in Excess of Costs, Estimated Earnings	1,421,112	138,568
Costs in Excess of Billings, Costs and Estimated Earnings	1,138,391	1,141,610
Billings in Excess of Costs, Costs and Estimated Earnings	4,650,053	870,058
Costs in Excess of Billings, Amounts Billed	(849,109)	(690,704)
Billings in Excess of Costs, Amounts Billed	(5,001,342)	(1,198,099)
Costs in Excess of Billings	289,282	450,906
Billings in Excess of Costs and Profit	$ (351,289)	$ (328,041)