Accounts Receivable, Net (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Summary of accounts receivable
Account receivables	$ 2,323,370	$ 2,150,981
Less: Allowance for doubtful accounts	(336,707)	(233,282)
Accounts receivable, net	$ 1,986,663	$ 1,917,699