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

12 Months Ended

Dec. 31, 2019

Notes Tables

Reserve for Sales Returns and Allowances [Table Text Block]

	Years Ended December 31,
	2019			2018			2017
Balance at the beginning of year	$	1,893		$	1,125		$	1,967
Provision for returns and allowances		4,334			4,908			2,789
Actual returns and allowances paid to customers		(4,115	)		(4,140	)		(3,631	)
Balance at the end of year	$	2,112		$	1,893		$	1,125