Note 2 - Revenue and Product Costs (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

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

	Customer		Deferred
	Deposits		Revenue
Balance at January 1, 2023	$	-	$	333
Additions, net		3		124
Transfer to revenue		-		(117	)
Balance at June 30, 2023	$	3	$	340
Current portion	$	3	$	211
Long-term portion	$	-	$	129