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Strategic Alliance and Investment by Elutions, Inc (Details 1) (Tracking Warrant [Member], USD $)
3 Months Ended
Mar. 29, 2014
Fair Value Assumptions And Methodology [Line Items]  
Common stock price $ 4.33
Dividend yield 0.00%
Exercise price of Tracking Warrant $ 3.28
Expected term 2 years 6 months
Risk-free interest rate 1.70%
Estimated stock volatility 35.10%
Issuance Date [Member]
 
Fair Value Assumptions And Methodology [Line Items]  
Common stock price $ 4.30
Dividend yield 0.00%
Exercise price of Tracking Warrant $ 3.28
Expected term 2 years 6 months
Risk-free interest rate 1.60%
Estimated stock volatility 35.40%