Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Estimated Useful Life Of Asset [Table Text Block]

The estimated useful life by asset description is noted in the following table.

Asset Description	Estimated Useful Life
Office equipment and furniture	3 – 5 years
Manufacturing equipment	10 years
Leasehold improvements and fixtures	Lesser of estimated useful life or lease term