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Note 8 - Assets Held for Lease (Details Textual)
3 Months Ended
Dec. 14, 2018
USD ($)
Feb. 28, 2019
USD ($)
Feb. 28, 2018
USD ($)
Nov. 30, 2017
Sales [Member]        
Operating Leases, Income Statement, Lease Revenue, Total   $ 179,043 $ 48,960  
Other Nonoperating Income (Expense) [Member]        
Operating Leases, Income Statement, Lease Revenue, Total   $ 2,500 $ 38,180  
Modular Buildings [Member]        
Property Subject to or Available for Operating Lease, Number of Units       1
West Union Facility [Member]        
Proceeds from Sale of Productive Assets, Total $ 900,000