CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	373,355	373,555
Preferred stock, shares outstanding	373,355	373,555
Preferred stock, Liquidation value	$ 2,871
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	500,000,000	500,000,000
Common stock, shares issued and issuable	66,408,694	48,379,042
Common stock, shares outstanding	66,389,485	48,359,833
Treasury stock at cost, shares	19,209	19,209