Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Accounting Policies [Abstract]

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

		Three Months Ended
		March 31,
Vendor	Supplies	2015	2014
A	Substrates	39%	19%
B	Substrates	11%	*
C	Substrates	*	10%
D	Catalysts	*	20%
* less than 10%

Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

Warrant liability	Level 1	Level 2	Level 3
March 31, 2015	-	-	$                 2,003
December 31, 2014	-	-	$                 1,474

Schedule of Reconciliation of Warrants Liability [Table Text Block]

	Three Months Ended
	March 31,
	2015	2014
Balance at beginning of period	$                 1,474	$                   939
Exercise of common stock warrants		(2,505)
Remeasurementof common stock warrants	529	2,051
Balance at end of period	$                 2,003	$                   485