Quarterly report pursuant to Section 13 or 15(d)

Investment in a Joint Venture (Details Textual)

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Investment in a Joint Venture (Details Textual) (USD $)
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 20, 2012
Mar. 31, 2014
Dec. 31, 2012
Dec. 31, 2010
Dec. 31, 2013
Mar. 31, 2013
Investment [Line Items]            
Stock Issued During Period, Value, New Issues   $ 947,000        
Payments To Fund Joint Venture Investments       500,000    
Maximum Amount Committed Towards Contributions In Joint Venture       2,000,000    
Cash and cash equivalents   5,519,000 572,000   1,638,000 4,536,000
Acquisition of product license       3,600,000    
Finite-Lived Intangible Assets, Useful Life (in years)       12 years 9 months    
Ownership Percentage In Joint Venture   50.00%        
Payments For Legal Settlements 2,100,000   2,100,000      
PSI Parent [Member]
           
Investment [Line Items]            
Stock Issued During Period, Shares, New Issues       1,440,000    
Stock Issued During Period, Value, New Issues       2,600,000    
Payments To Fund Joint Venture Investments       1,000,000    
Corporate Joint Venture [Member]
           
Investment [Line Items]            
Cash and cash equivalents   $ 375,000