Condensed Consolidated Balance Sheets [Parenthetical] (USD $)	Mar. 31, 2013	Dec. 31, 2012
Trade accounts receivable, allowance for doubtful accounts (in dollars)	$ 1,673,631	$ 1,576,955
Preferred stock, par value (in dollars per share)	$ 0.000001	$ 0.000001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.000001	$ 0.000001
Common stock, shares authorized	95,000,000	95,000,000
Common stock, shares issued	42,957,770	42,877,770
Common Stock, shares outstanding	42,957,770	42,877,770