Note 4 - Contracts in Progress - Long-term Contracts (Details) - USD ($)	Nov. 30, 2015	Nov. 30, 2014
Cost and Profit In Excess of Billings [Member]
Costs	$ 233,544	$ 14,724
Estimated earnings	75,822	4,819
	309,366	19,543
Less: amounts billed	(102,694)	(2,000)
	206,672	17,543
Billings in Excess of Cost and Profit [Member]
Costs	695,915	623,670
Estimated earnings	227,442	204,114
	923,357	827,784
Less: amounts billed	(1,010,215)	(924,166)
	$ (86,858)	$ (96,382)