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Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Jul. 01, 2012
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value [Abstract]
Servicing assets and servicing liabilities at fair value, cumulative effect of change in accounting principle, gross	$ 459,890
Servicing assets and servicing liabilities at fair value, cumulative effect of change in accounting principle, net	$ 281,868
Special stock dividend to common shareholders paid		4.00%

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- Definition

Servicing Assets and Liability at Fair Value Changes in Fair Value Resulting From Changes in Accounting Principle Gross

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- Definition

Servicing Assets and Liability at Fair Value Changes in Fair Value Resulting From Changes in Accounting Principle Net

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- Definition

Special stock dividend to common shareholders.

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