Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2012

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Text Block]

Accounts receivable, net, consists of the following:

	March 31, 2012			December 31, 2011
Accounts receivable	$	4,253,528		$	4,530,242
Allowances for doubtful accounts	(45,881		)	(48,125		)
Accounts receivable, net	$	4,207,647		$	4,482,117