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Significant Accounting Policies (Details)
3 Months Ended 12 Months Ended
Dec. 31, 2013
USD ($)
Dec. 31, 2015
USD ($)
Business_Segment
distributor
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Jul. 31, 2010
USD ($)
Market Concentrations and Credit Risk [Line Items]            
Number of business segments | Business_Segment   1        
FDIC insured amount           $ 250,000
Cash and cash equivalents uninsured amount   $ 27,700,000 $ 44,600,000      
Number of major customers | distributor   1        
Impairment of intangible assets       $ 368,000 $ 1,800,000  
Impairment of Long-lived Assets [Abstract]            
Impairment loss $ 30,000          
Grant Income [Abstract]            
Proceeds from grant       250,000    
Patents            
Impairment of Long-lived Assets [Abstract]            
Intangible assets, net of accumulated amortization   $ 851,000 $ 594,000 $ 689,000    
Minimum            
Property and Equipment [Abstract]            
Property and equipment estimated useful life   3 years        
Maximum            
Property and Equipment [Abstract]            
Property and equipment estimated useful life   7 years        
Revenue | AvKare            
Market Concentrations and Credit Risk [Line Items]            
Concentration of risk (percent)   24.00% 34.00% 56.00%    
Accounts Receivable | AvKare            
Market Concentrations and Credit Risk [Line Items]            
Concentration of risk (percent)   26.00% 33.00%