Loan payable (Details Textual) (USD $)	12 Months Ended			12 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Oct. 31, 2012	Dec. 31, 2012 Line of Credit [Member]	Jun. 30, 2011 Line of Credit [Member]	Dec. 31, 2012 Warrant One [Member]	Oct. 31, 2012 Warrant One [Member]
Loan Payable (Textual) [Abstract]
Line of credit for the purchase of capital equipment			$ 2,000,000		$ 1,000,000
Line of credit facility commitment fees	15,000			10,000
Purchase of common stock						16,071	36,145
Warrant exercisable for seven years	$ 1.66					$ 1.40
Approximate fair value of warrant	31,916					10,000
Amortization of the deferred financing costs	6,219	4,146				1,140
Interest and debt expense	16,428	8,334				14,794
Loan Payable (Additional Textual) [Abstract]
Line of credit for working capital purpose	200,000
Fixed interest rate	6.50%
Period for charging 6.5% interest rate	30 months
Period for charging equal interest and principal payments	54 months
Maturity date	Oct. 05, 2019
Principal amount outstanding	1,578,000
Amount of monthly principal payment	29,222
Commencement date of monthly installments	May 01, 2015
Future Principal payment due : 2015	234,000
Future Principal payment due : 2016	351,000
Future Principal payment due : 2017	351,000
Future Principal payment due after year five	642,000
Amortization period of deferred financing cost	7 years
Amount withdrawn	1,578,000
Withdrawal for working capital purposes	200,000
Withdrawal for capital equipment	1,378,000
Interest rate, minimum	3.50%
Interest rate, maximum	6.75%
Loan repayable period	36 months
Repayment of loans payable	$ 134,372