CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance (in dollars)	$ 579,143	$ 579,143
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	45,238,933	44,952,405
Common stock, shares outstanding	45,110,956	44,857,259
Treasury stock, shares	127,977	95,146