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Fair Value Measurements (Details Narrative) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Sep. 16, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Marketable securities, fair value $ 7,420,042 $ 10,900,722  
Derivative Instruments 82,024 137,171 $ 200,000
Other long-term liabilities | Fair Value, Inputs, Level 3      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Derivative Instruments 100,000 100,000  
Corporate debt and government securities      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Marketable securities, fair value 7,400,000 10,900,000  
Corporate debt and government securities | Marketable securities | Fair Value, Inputs, Level 2      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Marketable securities, fair value 7,400,000 10,900,000  
Money market funds and commercial paper | Cash and cash equivalents | Fair Value, Inputs, Level 1      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Money market funds $ 2,700,000 $ 2,000,000