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Accounts Receivable (Details 1) (USD $)	3 Months Ended	12 Months Ended
Accounts Receivable (Details 1) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Accounts receivable allowance, beginning of period	$ 663,511	$ 237,844
Provision adjustment during period	0	425,667
Accounts receivable allowance, end of period	$ 663,511	$ 663,511

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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