Basis of Condensed Consolidated Financial Statements (Details) (USD $)	3 Months Ended	6 Months Ended			12 Months Ended	6 Months Ended			6 Months Ended	3 Months Ended		6 Months Ended		6 Months Ended
	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010	Dec. 31, 2010 June 30 2011 [Member]	Jun. 30, 2010 June 30 2011 [Member] Deferred Financing Costs From Operating To Financing [Member]	Jun. 30, 2010 June 30 2011 [Member] Net Cash Provided By Continuing Operations To Net Cash Provided By Discontinued Operations [Member]	May 26, 2010 FAFC [Member]	Jun. 30, 2011 Common Stock [Member] FAFC [Member]	Jun. 30, 2011 FAFC [Member]	Jun. 30, 2010 FAFC [Member]	Jun. 30, 2011 FAFC [Member]	Jun. 30, 2011 FAFC [Member] Promissory Note To FAFC [Member] Notes Payable, Other Payables [Member]	Jun. 30, 2011 Common Stock [Member]
Restricted Cash and Investments, Noncurrent		$ 23,975,000		$ 21,095,000
Prior Period Reclassification Adjustment					21,095,000	14,800,000	20,400,000
Common stock, par value (in dollars per share)		$ 0.00001		$ 0.00001				$ 1.00
Debt Instrument, Face Amount													19,900,000
FAFC Liabilities		0
Seperation and Distribution Agreement Amount												250,000,000
Stockholders Equity Spin Off Shares Issued									12,933,265
Stock Issued During Period, Value, Other												242,600,000
Increase (Decrease) in Due to Related Parties, Current		(18,115,000)	15,945,000									7,400,000
Stock Repurchased During Period, Shares											4,000,000			9,516,000
Payments for Repurchase of Common Stock		176,512,000	0							75,800,000
Price Of Shares Purchased										$ 18.95
Corporate Costs Up To Separation Date Included In Operating Expense	$ 38,600,000		$ 70,500,000