Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts	$ 28,135	$ 22,292
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	62,611,506	59,768,846
Treasury stock, shares	261,497	261,497
Series E Convertible Preferred Stock
Preferred stock, shares issued	80,000	80,000
Preferred stock, shares outstanding	80,000	80,000
Preferred stock, liquidation value	$ 107	$ 107