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Note 10 - Deferred Revenue (Details) (Miltek MONOVISC Agreement [Member], USD $)
3 Months Ended
Mar. 31, 2014
Dec. 31, 2011
Miltek MONOVISC Agreement [Member]
   
Note 10 - Deferred Revenue (Details) [Line Items]    
Deferred Revenue   $ 2,500,000
Deferred Revenue, Revenue Recognized 2,200,000  
Revenue Recognition, Milestone Method, Revenue Recognized $ 17,500,000