Accounts Receivable

3 Months Ended

Mar. 31, 2016

Accounts Receivable [Abstract]

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

Note 6.  Accounts Receivable

Our accounts receivable represent amounts due to us from collaborators, royalties, and sales of research reagents, and consisted of the following at March 31, 2016 and December 31, 2015 (in thousands):

	March 31, 2016		December 31, 2015
Royalties	$	2,189	$	3,463
Collaborators		166		63
Other		79		27
Accounts receivable, gross		2,434		3,553
Less - Allowance for doubtful accounts		-		(10	)
Accounts receivable, net	$	2,434	$	3,543