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Engineering Development	12 Months Ended
Dec. 31, 2014
Engineering Development [Abstract]
Engineering Development [Text Block]	15. Engineering Development Engineering development expense was $177,000 and $729,000 for the years ended December 31, 2014 and 2013, respectively, which are included in General and administrative expenses in the Consolidated Statements of Operations.

Engineering Development

12 Months Ended

Dec. 31, 2014

15. Engineering Development

Engineering development expense was $177,000 and $729,000 for the years ended December 31, 2014 and 2013, respectively, which are included in General and administrative expenses in the Consolidated Statements of Operations.