Note 5 - Allowance for Doubtful Accounts (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Financing Receivable, Current, Allowance for Credit Loss [Table Text Block]

	For the Year Ended December 31,
	2021			2020
Balance at beginning of period	$	473		$	127
Bad debt expense		9			227
Write-offs		(229	)		(77	)
Other adjustments		(206	)		196
Balance at end of period	$	47		$	473