Note 4 - Contract Receivables, Contract Assets and Contract Liabilities (Tables)

3 Months Ended

Feb. 28, 2021

Notes Tables

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

	February 28, 2021		November 30, 2020
Receivables	$	1,681,000	$	2,391,000
Assets		294,000		56,000
Liabilities		1,458,000		276,000