Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Common stock, shares authorized	70,000,000	70,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares issued	33,875,625	33,331,182
Common stock, shares outstanding	33,875,625	33,331,182
Series A Preferred Stock
Preferred stock, shares authorized	444,541	444,541
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued	0	83
Preferred stock, shares outstanding	0	83
Preferred stock, liquidation preference	$ 0.001	$ 0.001
Series B Preferred Stock
Preferred stock, shares authorized	54,425	54,425
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares issued	83	95
Preferred stock, shares outstanding	83	95
Preferred stock, liquidation preference	$ 0.001	$ 0.001