Concentration of Credit Risk (Details Textual) (USD $)			3 Months Ended		6 Months Ended				3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2013 Customer A [Member]	Jun. 30, 2012 Customer A [Member]	Jun. 30, 2013 Customer A [Member]	Jun. 30, 2012 Customer A [Member]	Jun. 30, 2013 Customer A [Member] Accounts Receivable [Member]	Jun. 30, 2012 Customer A [Member] Accounts Receivable [Member]	Jun. 30, 2013 Customer B [Member]	Jun. 30, 2013 Customer B [Member]	Jun. 30, 2013 Customer B [Member] Accounts Receivable [Member]	Jun. 30, 2013 Customer One [Member]	Jun. 30, 2013 Customer One [Member]	Jun. 30, 2012 Customer One [Member]	Jun. 30, 2013 Customer Two [Member]	Jun. 30, 2013 Customer Two [Member]
Accounts receivable	$ 7,646,658	$ 7,773,332					$ 1,411,000	$ 972,000			$ 1,209,000
Concentration Risk, Percentage			27.10%	30.30%	31.90%	28.60%	18.50%	17.10%	14.70%	10.20%	15.80%	10.00%	10.00%	10.00%	10.00%	10.00%