CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Allowance for doubtful accounts	$ 1,912,668	$ 2,404,659
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	38,732,896	38,712,896
Common stock, shares outstanding	38,732,896	38,712,896