CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Preferred stock, par value	$ 0.001	$ 0.001	[1]
Preferred stock, shares authorized	10,000,000	10,000,000	[1]
Preferred stock, shares issued	373,355	373,355	[1]
Preferred stock, shares outstanding	373,355	373,355	[1]
Preferred stock, Liquidation value	$ 2,871
Common stock, par value	$ 0.001	$ 0.001	[1]
Common stock, shares authorized	500,000,000	500,000,000	[1]
Common stock, shares issued and issuable	69,812,062	66,408,694	[1]
Common stock, shares outstanding	69,792,853	66,389,485	[1]
Treasury stock, shares	19,209	19,209	[1]

[1] Derived from audited information