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Mortgage Servicing - Schedule of Activity Related to MSRs - Fair Value Method (Details) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Conventional [Member]		Mar. 31, 2013 Conventional [Member]		Mar. 31, 2014 Fair Value, Inputs, Level 3 [Member] Portion at Fair Value Measurement [Member] Conventional [Member]
Servicing Asset at Fair Value, Amount [Roll Forward]
Beginning balance	$ 110,826	$ 116,029	$ 116,029		$ 85,213		$ 110,826
Changes in market value assumptions			(3,155)	[1]	4,650	[1]
Realization of cash flows and other changes			(2,048)	[1]	(5,329)	[1]
Ending balance	$ 110,826	$ 116,029			$ 84,534		$ 110,826
[1] Changes in fair value are recognized in Servicing and origination expense in the unaudited Consolidated Statement of Operations.

X

- Definition

The net increase or decrease in fair value as a result of changes in the assumptions or model used to calculate the fair value of servicing assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746

+ Details

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Balance Type:	debit
Period Type:	instant

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- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The net Increase or Decrease in fair value as a result of other changes that are not additions, disposals, or a result of change in the inputs, assumptions, or model used to calculate the fair value of servicing assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 50

-Paragraph 3

-Subparagraph (a)(4)(ii)

-URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122625-111746

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