Note 12 - Earn-out Milestone Liability (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Changes in Earn out Milestone Liabilities [Table Text Block]

Balance at January 1, 2017	$	13,188,226
Non-cash benefit from the adjustment for the change in fair value included in net loss		(1,246,151	)
Balance at September 30, 2017	$	12,518,054

Schedule of Milestone Risk Adjustment Assessment [Table Text Block]

Date	Risk-adjustment Assessment of each Milestone				Discount Rate			Estimated Time to Achieve (years)
September 30, 2017		35%	to	80%		9	%		1.25	to	1.75
June 30, 2017		50%	to	80%		9	%		1.50	to	2.00
December 31, 2016		50%	to	80%		9	%		2.00	to	2.50
September 30, 2016		10%	to	75%		9	%		0.50	to	1.75
June 30, 2016		10%	to	75%		9	%		0.50	to	2.00
December 31, 2015		10%	to	75%		9	%		0.50	to	2.50