12. Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

2013	$	209,751
2014		177,410
2015		180,872
2016		184,403
2017		188,005
2018		15,692
Thereafter		—
	$	956,133

Schedule of Product Warranty Liability [Table Text Block]

	Year Ended December 31,
	2012			2011
Product warranty liability at beginning of period	$	140,000			25,000
Additions to warranty accrual (including changes in estimates)		385,625			251,885
Warranty expenses during the period		(262,625	)		(136,885	)
Product warranty liability at end of period	$	263,000			140,000