Note 2 - Revenue and Product Costs (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

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

	Customer			Deferred
	Deposits			Revenue
Balance at January 1, 2022	$	43		$	265
Additions, net		4			148
Transfer to revenue		(43	)		(69	)
Balance at June 30, 2022	$	4		$	344
Current portion	$	4		$	178
Long-term portion	$	-		$	166