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

6 Months Ended

May 31, 2020

Notes Tables

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

	May 31, 2020		November 30, 2019
Receivables	$	660,000	$	115,000
Assets		162,000		727,000
Liabilities	$	365,000	$	89,000