CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2012	Dec. 31, 2011
ASSETS
Property and equipment, net of accumulated depreciation	$ 2,279,840	$ 1,814,473
Intangible assets, net of accumulated amortization	$ 4,848,756	$ 3,468,515
Stockholders' equity:
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	130,000,000	130,000,000
Common stock, shares issued (in shares)	88,423,169	74,306,895
Common stock, shares outstanding (in shares)	88,373,169	74,256,895
Treasury stock, shares (in shares)	50,000	50,000