Note 5 - Accounts Receivable

3 Months Ended

Mar. 31, 2020

Notes to Financial Statements

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

Note

5

. Accounts Receivable

Our accounts receivable represents amounts due to us from royalties, collaborators, AZEDRA product sales and, to a small extent, sales of research reagents, and consisted of the following at

March 31, 2020

and

December 31, 2019 (

in thousands):

	March 31,		December 31,
	2020		2019
Royalties	$	4,789	$	4,304
Product sales, license and other		1,401		11,672
Accounts receivable, net	$	6,190	$	15,976