Note 3 - Acquisition of SynGen - Supplemental Pro Forma Data (Details) - SynGen [Member]	3 Months Ended
	Mar. 31, 2017 USD ($) $ / shares
Net revenues	$ 3,380,000
Net loss	$ (2,248,000)
Basic and diluted net loss per common share (in dollars per share) | $ / shares	$ (0.22)