Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Finite-Lived Intangible Assets, Net [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The Company’s intangible assets and accumulated amortization consisted of the following at December 31, 2014 and 2013:

	2014						2013
			Accumulated						Accumulated
	Gross		Amortization		Net		Gross		Amortization		Net
Patent asset	$	1,822,037	$	(588,865)	$	1,233,172	$	1,539,349	$	(401,648)	$	1,137,701