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Commitments and Contingencies (Details 1) (USD $)
Dec. 31, 2013
Summary of contractual obligations  
Unconditional purchase obligations for research and development total $ 3,212,400
Unconditional purchase obligations for research and development less than one year 1,392,191
Unconditional purchase obligations for research and development one to three years 1,820,209
Unconditional purchase obligations for research and development three to five years 0
Unconditional purchase obligations for research and development more than five years 0
Operating lease obligation total 267,061
Operating lease obligation less than year 97,724
Operating lease obligation one to three years 169,337
Operating lease obligation three to five years 0
Operating lease obligation more than five years 0
Total 3,479,461
less than one year 1,489,915
One to three years 1,989,546
Three to five years 0
More than five years $ 0