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Quarterly Results of Operations (Unaudited) (Restated for Discontinued Operations) (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock-based compensation	$ 5,827	$ 5,837	$ 32,197	$ 23,657	$ 16,507
Deferred Policy Acquisition Cost, Amortization Expense, Effect of Adjustments to Estimated Gross Profit	32,901	11,757
Valuation Allowance, Deferred Tax Asset, Change in Amount		$ 47,422

The amount of adjustment to amortization of deferred policy acquisition costs arising from a revision in estimated gross profit (when such amount serves as the basis for allocating amortization of DAC to reporting periods).

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