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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2015
Accounting Policies [Abstract]  
Property, Plant and Equipment, Estimated Useful Lives [Table Text Block]
Estimated useful lives of the principal classes of assets are as follows:
 
Leasehold improvements
Up to 4 years
Machinery and equipment
5 years
Furniture, fixtures, software and computers
3-5 years