Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Convertible debt, net of unamortized debt discount	$ 8,132
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	61,786,103	61,000,724
Common stock, shares outstanding	61,786,103	61,000,724
Convertible debt [Member]
Convertible debt, inclusive of derivative liability	3,861
Convertible debt, net of unamortized debt discount	$ 8,132