Note 6 - Accounts Receivable, Net (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	December 31, 2020			December 31, 2019
	(In thousands)
Gross accounts receivable	$	2,917		$	2,274
Allowance for uncollectible accounts		(1,802	)		(1,654	)
Total accounts receivable, net	$	1,115		$	620