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

9 Months Ended

Aug. 31, 2022

Notes Tables

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

	August 31, 2022		November 30, 2021
Receivables	$	3,820,000	$	2,663,000
Assets		194,000		177,000
Liabilities		1,604,000		559,000