Loan payable (Details) (Textual) (USD $)	3 Months Ended	6 Months Ended			6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2012 Line of Credit [Member]	Jun. 30, 2011 Line of Credit [Member]	Jun. 30, 2012 Warrant [Member]
Schedule of Capitalization Long Term Debt [Line Items]
Line of credit for the purchase of capital equipment				$ 1,000,000
Line of Credit Facility, Commitment Fee Amount			10,000
Advances under equipment line of credit			320,733
Warrant Issued for Purchase of Common Stock					16,071
Warrant Exercisable for Seven Years					$ 1.40
Approximate Fair Value of Warrant					10,000
Loan Payable (Textual) [Abstract]
Interest Rate, Minimum		3.50%
Interest Rate, Maximum		6.75%
Commercial Paper	50,000	50,000
Amortization of the deferred financing costs	7,947	7,947
Interest and debt expense	$ 2,931	$ 5,201
Amortization period of deferred financing cost		3 years