Fair Values of Assets and Liabilities (Details 1) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
MSRs [Member]
Rollforward of financial instruments measured on a recurring basis and classified as Level 3
Balance, beginning of period	$ 104,997	$ 132,405	$ 125,679	$ 176,427
Total gains/losses:
Included in earnings	(31,173)	(20,250)	(51,855)	(64,272)
Included in OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Repayments	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers in/out of Level 3	0	0	0	0
Balance, end of period	73,824	112,155	73,824	112,155
The amount of total gains or losses for the period included in earnings (or OCI) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	(31,173)	(20,250)	(51,855)	(64,272)
Derivative Instruments [Member]
Rollforward of financial instruments measured on a recurring basis and classified as Level 3
Balance, beginning of period	418	6,492	966	(4,236)
Total gains/losses:
Included in earnings	7,557	3,872	7,264	12,811
Included in OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Repayments	0	0	0	0
Issuances	0	0	0	(1,741)
Settlements	(41)	(1,741)	(296)	893
Transfers in/out of Level 3	0	(896)	0	0
Balance, end of period	7,934	7,727	7,934	7,727
The amount of total gains or losses for the period included in earnings (or OCI) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	7,516	2,976	6,968	11,708
Municipal securities [Member]
Rollforward of financial instruments measured on a recurring basis and classified as Level 3
Balance, beginning of period	123,800	262,128	149,806	11,515
Total gains/losses:
Included in earnings	0	0	0	0
Included in OCI	0	0	0	0
Purchases	0	0	1,760	0
Sales	0	(28,838)	0	(28,837)
Repayments	0	0	0	0
Issuances	0	0	0	0
Settlements	(22,373)	0	(50,139)	(73,025)
Transfers in/out of Level 3	0	0	0	323,637
Balance, end of period	101,427	233,290	101,427	233,290
The amount of total gains or losses for the period included in earnings (or OCI) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	0	0	0	0
Private label CMO [Member]
Rollforward of financial instruments measured on a recurring basis and classified as Level 3
Balance, beginning of period	88,770	394,611	121,925	477,319
Total gains/losses:
Included in earnings	(872)	(1,598)	(1,255)	(5,429)
Included in OCI	(2,543)	12,674	1,074	37,640
Purchases	0	0	0	0
Sales	0	(109,310)	(20,958)	(166,704)
Repayments	0	0	0	0
Issuances	0	0	0	0
Settlements	(6,455)	0	(21,886)	(66,602)
Transfers in/out of Level 3	0	(20,153)	0	0
Balance, end of period	78,900	276,224	78,900	276,224
The amount of total gains or losses for the period included in earnings (or OCI) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	(2,543)	3,727	769	18,613
Asset-backed Securities [Member]
Rollforward of financial instruments measured on a recurring basis and classified as Level 3
Balance, beginning of period	165,742	218,940	162,684	407,098
Total gains/losses:
Included in earnings	(354)	(393)	(3,615)	(4,888)
Included in OCI	(9,874)	(5,312)	3,716	3,263
Purchases	0	0	0	0
Sales	0	(11,977)	0	(14,608)
Repayments	0	0	0	0
Issuances	0	0	0	0
Settlements	(2,495)	0	(9,766)	(8,834)
Transfers in/out of Level 3	0	(3,300)	0	(184,073)
Balance, end of period	153,019	197,958	153,019	197,958
The amount of total gains or losses for the period included in earnings (or OCI) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	(9,874)	(5,928)	3,716	2,384
Automobile Loan [Member]
Rollforward of financial instruments measured on a recurring basis and classified as Level 3
Balance, beginning of period	400,935	186,388	522,717	0
Total gains/losses:
Included in earnings	(3,695)	4,887	(5,079)	14,990
Included in OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Repayments	(52,711)	(2,200)	(173,109)	(5,934)
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers in/out of Level 3	0	0	0	180,019
Balance, end of period	344,529	189,075	344,529	189,075
The amount of total gains or losses for the period included in earnings (or OCI) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	(3,695)	2,687	(5,079)	9,056
Equity investments [Member]
Rollforward of financial instruments measured on a recurring basis and classified as Level 3
Balance, beginning of period	0	0	0	25,872
Total gains/losses:
Included in earnings	0	0	0	0
Included in OCI	0	0	0	0
Purchases	0	0	0	0
Sales	0	0	0	0
Repayments	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers in/out of Level 3	0	0	0	(25,872)
Balance, end of period	0	0	0	0
The amount of total gains or losses for the period included in earnings (or OCI) attributable to the change in unrealized gains or losses relating to assets still held at reporting date	$ 0	$ 0	$ 0	$ 0

Fair Value Assets Liabilities Measured On Recurring Basis Unobservable Input Reconciliation Calculation Roll Forward.

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Fair Value Measured On Recurring Basis Change In Unrealized Gain Loss Included In Earnings.

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Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Repayments.

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This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in earnings or resulted in a change in net asset value.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)

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This element represents total gains or losses for the period (realized and unrealized), arising from assets measured at fair value on a recurring basis using unobservable inputs (Level 3), which are included in other comprehensive income (a separate component of shareholders' equity).

+ References

+ Details

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- Definition

Issues that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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Purchases that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

+ References

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Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

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Settlements that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy.

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- Definition

This element represents [net] transfers in to and out of assets measured at fair value on a recurring basis using unobservable inputs (Level 3) which have taken place during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258

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- Definition

This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

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