Covered Assets And Indemnification Asset (Internal Risk Rating By Covered Loan Class) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment [Line Items]
Commercial real estate, Term & multifamily	$ 3,616,386	$ 3,558,295
Commercial real estate, Construction & development	162,866	165,066
Commercial real estate, Residential development	74,604	90,073
Commercial, Term	687,242	625,766
Commercial, LOC & other	764,049	832,999
Residential, Mortgage	345,763	315,927
Residential, Home equity loans & lines	264,662	272,192
Consumer & other	37,082	38,860
Total	5,952,654	5,899,178
Covered Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial real estate, Term & multifamily	449,364	468,747
Commercial real estate, Construction & development	12,725	13,105
Commercial real estate, Residential development	17,555	15,794
Commercial, Term	27,870	31,139
Commercial, LOC & other	20,568	22,524
Residential, Mortgage	31,889	35,233
Residential, Home equity loans & lines	26,325	28,366
Consumer & other	6,883	7,543
Total	593,179	622,451
Covered Loans [Member] \| Pass/Watch [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial real estate, Term & multifamily	312,632	329,273
Commercial real estate, Construction & development	2,016	1,552
Commercial real estate, Residential development	133	1,187
Commercial, Term	14,268	18,006
Commercial, LOC & other	12,908	13,605
Residential, Mortgage	31,889	35,233
Residential, Home equity loans & lines	26,187	28,223
Consumer & other	6,883	7,543
Total	406,916	434,622
Covered Loans [Member] \| Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial real estate, Term & multifamily	55,549	58,610
Commercial real estate, Construction & development	226	1,410
Commercial real estate, Residential development	2,231	405
Commercial, Term	2,035	1,661
Commercial, LOC & other	2,467	2,756
Residential, Mortgage
Residential, Home equity loans & lines
Consumer & other
Total	62,508	64,842
Covered Loans [Member] \| Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial real estate, Term & multifamily	66,099	68,521
Commercial real estate, Construction & development	6,844	6,733
Commercial real estate, Residential development	9,979	8,394
Commercial, Term	8,902	8,244
Commercial, LOC & other	4,902	5,607
Residential, Mortgage
Residential, Home equity loans & lines	138	143
Consumer & other
Total	96,864	97,642
Covered Loans [Member] \| Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial real estate, Term & multifamily	15,084	12,343
Commercial real estate, Construction & development	3,639	3,410
Commercial real estate, Residential development	5,212	5,808
Commercial, Term	2,665	3,228
Commercial, LOC & other	291	556
Residential, Mortgage
Residential, Home equity loans & lines
Consumer & other
Total	26,891	25,345
Covered Loans [Member] \| Loss [Member]
Financing Receivable, Recorded Investment [Line Items]
Commercial real estate, Term & multifamily
Commercial real estate, Construction & development
Commercial real estate, Residential development
Commercial, Term
Commercial, LOC & other
Residential, Mortgage
Residential, Home equity loans & lines
Consumer & other
Total

Loans Receivable Commercial LOC and Other

No definition available.

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- Definition

Loans Receivable Commercial Residential Development

+ References

No definition available.

+ Details

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- Definition

Loans Receivable Commercial Term

+ References

No definition available.

+ Details

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- Definition

Loans Receivable Commercial Term and Multifamily

+ References

No definition available.

+ Details

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- Details

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- Definition

Gross amount under revolving lines of credit outstanding extended to a homeowner and collateralized by the equity in the home. Such lines of credit are generally subordinated to the homeowner's mortgage loan or loans. Loan proceeds are generally unrestricted as to use by the borrower.

+ References

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

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Chapter 8

-Paragraph 41

-IssueDate 2006-05-01

-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 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph e

-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 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a)(3),(b))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 9

-Section 03

-Paragraph 7

-Subparagraph a, b

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher OTS

-Name Federal Regulation (FR)

-Number Title 12

-Chapter V

-Section 563c.102

-Subsection I

-Paragraph 8

-Subparagraph c(i)

-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

+ Details

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- Definition

The gross carrying amount of mortgage loans to individuals. This item excludes subordinated loans such as home equity lines of credit.

+ References

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

-Publisher OTS

-Name Federal Regulation (FR)

-Number Title 12

-Chapter V

-Section 563c.102

-Subsection I

-Paragraph 8

-Subparagraph c(i)

-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It 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 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph e

-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 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a)(3),(b))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 9

-Section 03

-Paragraph 7

-Subparagraph a, b

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Chapter 8

-Paragraph 40, 41

-IssueDate 2006-05-01

-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.

+ Details

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- Definition

The gross amount of other loans and leases to individuals not otherwise specified in the existing taxonomy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a)(7),(b))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Reflects the aggregate gross carrying amount of all categories of loans and leases held in portfolio, prior to deducting deferred income and the allowance for losses on loans and leases.

+ References

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 01-6

-Paragraph 13

-Subparagraph e

-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 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522

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- Definition

Reflects the gross carrying amount of unpaid loans that had been issued to businesses to construct a facility. Acquisition, development and construction (ADC) loans are generally issued sequentially and the net proceeds of the latest debt is used by the borrower to pay off the preceding loan. A construction loan ( in the form of a promissory note) is generally expected to be paid off with the net proceeds from permanent financing.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(a)(2))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Chapter 8

-Paragraph 52

-IssueDate 2006-05-01

-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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 9

-Section 03

-Paragraph 7

-Subparagraph a

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5066-111524

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