Note 15 - Depuy Synthes Mitek Sports Medicine Monovisc Agreement (Details Textual) - Mitek MONOVISC Agreement [Member] - USD ($) $ in Millions	1 Months Ended	6 Months Ended
Dec. 31, 2011	Jun. 30, 2017
License Agreement Term	15 years
Revenue Recognition, Milestone Method, Revenue Recognized		$ 5
Revenue Recognition, Milestone Method, End User Sales Threshold		$ 100

The amount of consideration recognized during the period for the milestone or milestones.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 28
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=68058744&loc=SL6892177-166501

Name:	us-gaap_RevenueRecognitionMilestoneMethodRevenueRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration