Note 2 - Revenue and Product Costs (Tables)

3 Months Ended

Mar. 31, 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		1		30
Transfer to revenue		-		(72	)
Balance at March 31, 2023	$	1	$	291
Current portion	$	1	$	169
Long-term portion	$	-	$	122