Annual report pursuant to Section 13 and 15(d)

Capital lease obligations (Details Textual)

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Capital lease obligations (Details Textual) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Capital lease obligations (Textual)    
Capital lease combined monthly installments payable to Systems Trading, Inc. and IBM $ 56,136 $ 56,136
Interest rates on capitalized leases, minimum 6.00%  
Interest rates on capitalized leases, maximum 12.00%