Note 3 - Reserve for Sales Returns and Allowances (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Reserve for Sales Returns and Allowances [Table Text Block]

	Years Ended December 31,
	2020			2019			2018
Balance at the beginning of year	$	2,112		$	1,893		$	1,125
Provision for returns and allowances		7,699			4,334			4,908
Actual returns and allowances paid to customers		(6,446	)		(4,115	)		(4,140	)
Balance at the end of year	$	3,365		$	2,112		$	1,893