Amortizable intangible assets -Amounts related to intangible assets (Details) (USD $)	Jun. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 886,621
Finite-Lived Intangible Assets, Accumulated Amortization	102,591
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	355,961
Finite-Lived Intangible Assets, Accumulated Amortization	29,192
Product Certification [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	290,660
Finite-Lived Intangible Assets, Accumulated Amortization	69,399
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	240,000
Finite-Lived Intangible Assets, Accumulated Amortization	$ 4,000