Consolidated Balance Sheet (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheet
Series A convertible preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Series A convertible preferred stock, shares authorized	49,625,000	49,625,000
Series A convertible preferred stock, shares issued	49,000,000	49,000,000
Series A convertible preferred stock, shares outstanding	49,000,000	49,000,000
Series A convertible preferred stock, aggregate liquidation preference (in dollars)	$ 70,378	$ 69,520
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	62,625,000	62,625,000
Common stock, shares issued	1,682,633	1,662,321
Common stock, shares outstanding	1,682,633	1,662,321