Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Accounts receivable, allowance	$ 4	$ 3
Stockholders' Equity
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	1,050,000,000	1,050,000,000
Common Stock, shares issued	229,178,000	198,188,000
Common Stock, shares outstanding	222,677,000	198,188,000
Treasury shares	6,500,000	0
Series A Preferred Stock [Member]
Stockholders' Equity
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	898,000	880,000
Preferred stock, shares outstanding	898,000	880,000
Preferred stock, liquidation preference	898
Series B Preferred Stock [Member]
Stockholders' Equity
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	14,000,000	14,000,000
Preferred stock, shares issued	9,337,000	9,250,000
Preferred stock, shares outstanding	9,337,700	9,250,000
Preferred stock, liquidation preference	140,060
Series C Preferred Stock [Member]
Stockholders' Equity
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	4,100,000	4,100,000
Preferred stock, shares issued	3,914,000	3,547,000
Preferred stock, shares outstanding	3,914,000	3,547,000
Preferred stock, liquidation preference	$ 5,871