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Estimated Fair Values (Tables) | 6 Months Ended
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Jun. 30, 2012
Estimated Fair Values [Abstract] |
Estimated Fair Values For Certain Financial Assets And Financial Liabilities | For all other financial assets and financial liabilities, the carrying value is a reasonable estimate of the fair value as of June 30, 2012, December 31, 2011, and June 30, 2011. The carrying value and fair value for these assets and liabilities are equivalent because they are relatively short term in nature and there is no interest rate or credit risk relating to them that would cause the fair value to differ from carrying value.
| June 30, 2012 |  | December 31, 2011 |  | June 30, 2011
Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Cash and due from banks | $ | 571,004 |  |  | $ | 571,004 |  |  | $ | 590,801 |  |  | $ | 590,801 |  |  | $ | 537,717 |  |  | $ | 537,717 |
Overnight investments | 984,536 |  |  | 984,536 |  |  | 434,975 |  |  | 434,975 |  |  | 741,654 |  |  | 741,654 |
Investment securities available for sale | 4,634,248 |  |  | 4,634,248 |  |  | 4,056,423 |  |  | 4,056,423 |  |  | 4,014,241 |  |  | 4,014,241 |
Investment securities held to maturity | 1,578 |  |  | 1,715 |  |  | 1,822 |  |  | 1,980 |  |  | 2,098 |  |  | 2,278 |
Loans held for sale | 76,374 |  |  | 78,139 |  |  | 92,539 |  |  | 93,235 |  |  | 56,004 |  |  | 56,004 |
Loans covered by loss share agreements, net of allowance for loan and lease losses | 1,911,554 |  |  | 1,873,323 |  |  | 2,272,891 |  |  | 2,236,343 |  |  | 2,330,303 |  |  | 2,318,304 |
Loans and leases not covered by loss share agreements, net of allowance for loan and lease losses | 11,277,326 |  |  | 11,200,523 |  |  | 11,400,754 |  |  | 11,312,900 |  |  | 11,348,239 |  |  | 11,213,325 |
Receivable from FDIC for loss share agreements (1) | 313,978 |  |  | 297,963 |  |  | 539,511 |  |  | 446,172 |  |  | 522,507 |  |  | 529,514 |
Income earned not collected | 49,743 |  |  | 49,743 |  |  | 42,216 |  |  | 42,216 |  |  | 50,876 |  |  | 50,876 |
Stock issued by: |  |  |  |  |  |  |  |  |  |  |
Federal Home Loan Bank of Atlanta | 38,105 |  |  | 38,105 |  |  | 41,042 |  |  | 41,042 |  |  | 45,002 |  |  | 45,002 |
Federal Home Loan Bank of San Francisco | 11,746 |  |  | 11,746 |  |  | 12,976 |  |  | 12,976 |  |  | 14,238 |  |  | 14,238 |
Federal Home Loan Bank of Seattle | 4,490 |  |  | 4,490 |  |  | 4,490 |  |  | 4,490 |  |  | 4,490 |  |  | 4,490 |
Deposits | 17,801,646 |  |  | 17,854,346 |  |  | 17,577,274 |  |  | 17,638,359 |  |  | 17,662,966 |  |  | 17,711,225 |
Short-term borrowings | 700,299 |  |  | 700,299 |  |  | 615,222 |  |  | 615,222 |  |  | 655,808 |  |  | 655,808 |
Long-term obligations | 644,682 |  |  | 677,372 |  |  | 687,599 |  |  | 719,999 |  |  | 792,661 |  |  | 807,407 |
Accrued interest payable | 23,093 |  |  | 23,093 |  |  | 23,719 |  |  | 23,719 |  |  | 27,930 |  |  | 27,930 |
Interest rate swap | 11,020 |  |  | 11,020 |  |  | 10,714 |  |  | 10,714 |  |  | 9,800 |  |  | 9,800 |
Assets And Liabilities Carried At Fair Value On A Recurring Basis | For assets and liabilities carried at fair value on a recurring basis, the following table provides fair value information as of June 30, 2012, December 31, 2011, and June 30, 2011:
|  |  | Fair value measurements using:
Description | Fair value |  | Quoted prices in active markets for identical assets and liabilities (Level 1 inputs) |  | Quoted prices for similar assets and liabilities (Level 2 inputs) |  | Significant unobservable inputs (Level 3 inputs)
June 30, 2012 |  |  |  |  |  |  |
Assets measured at fair value |  |  |  |  |  |  |
Investment securities available for sale |  |  |  |  |  |  |
U.S. Treasury | $ | 878,685 |  |  | $ | 878,685 |  |  | $ | — |  |  | $ | — |
Government agency | 2,978,198 |  |  | 2,978,198 |  |  | — |  |  | — |
Corporate bonds | 50,446 |  |  | 50,446 |  |  | — |  |  | — |
Residential mortgage-backed securities | 707,645 |  |  | — |  |  | 707,645 |  |  | — |
Equity securities | 18,238 |  |  | 18,238 |  |  | — |  |  | — |
State, county, municipal | 1,036 |  |  | — |  |  | 1,036 |  |  | — |
Total | $ | 4,634,248 |  |  | $ | 3,925,567 |  |  | $ | 708,681 |  |  | $ | — |
Liabilities measured at fair value |  |  |  |  |  |  |
Interest rate swaps accounted for as cash flow hedges | $ | 11,020 |  |  | $ | — |  |  | $ | 11,020 |  |  | $ | — |
December 31, 2011 |  |  |  |  |  |  |
Assets measured at fair value |  |  |  |  |  |  |
Investment securities available for sale |  |  |  |  |  |  |
U.S. Treasury | $ | 887,819 |  |  | $ | 887,819 |  |  | $ | — |  |  | $ | — |
Government agency | 2,592,209 |  |  | 2,592,209 |  |  | — |  |  | — |
Corporate bonds | 252,820 |  |  | 252,820 |  |  | — |  |  | — |
Residential mortgage-backed securities | 307,221 |  |  | — |  |  | 307,221 |  |  | — |
Equity securities | 15,313 |  |  | 15,313 |  |  | — |  |  | — |
State, county, municipal | 1,041 |  |  | — |  |  | 1,041 |  |  | — |
Total | $ | 4,056,423 |  |  | $ | 3,748,161 |  |  | $ | 308,262 |  |  | $ | — |
Liabilities measured at fair value |  |  |  |  |  |  |
Interest rate swaps accounted for as cash flow hedges | $ | 10,714 |  |  | $ | — |  |  | $ | 10,714 |  |  | $ | — |
June 30, 2011 |  |  |  |  |  |  |
Assets measured at fair value |  |  |  |  |  |  |
Investment securities available for sale |  |  |  |  |  |  |
U.S. Treasury | $ | 1,289,282 |  |  | $ | 1,289,282 |  |  | $ | — |  |  | $ | — |
Government agency | 1,904,843 |  |  | 1,904,843 |  |  | — |  |  | — |
Corporate bonds | 466,971 |  |  | 466,971 |  |  | — |  |  | — |
Residential mortgage-backed securities | 333,483 |  |  | — |  |  | 333,483 |  |  | — |
Equity securities | 18,609 |  |  | 18,609 |  |  | — |  |  | — |
State, county, municipal | 1,053 |  |  | — |  |  | 1,053 |  |  | — |
Total | $ | 4,014,241 |  |  | $ | 3,679,705 |  |  | $ | 334,536 |  |  | $ | — |
Liabilities measured at fair value |  |  |  |  |  |  |
Interest rate swaps accounted for as cash flow hedges | $ | 9,800 |  |  | $ | — |  |  | $ | 9,800 |  |  | $ | — |
Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis | For assets and liabilities carried at fair value on a nonrecurring basis, the following table provides fair value information as of June 30, 2012, December 31, 2011, and June 30, 2011:
|  |  | Fair value measurements using:
Description | Fair value |  | Quoted prices in active markets for identical assets and liabilities (Level 1 inputs) |  | Quoted prices for similar assets and liabilities (Level 2 inputs) |  | Significant nonobservable inputs (Level 3 inputs)
June 30, 2012 |  |  |  |  |  |  |
Loans held for sale | $ | 49,277 |  |  | $ | — |  |  | $ | 49,277 |  |  | $ | — |
Impaired loans not covered by loss share agreements | 111,288 |  |  | — |  |  | — |  |  | 111,288 |
December 31, 2011 |  |  |  |  |  |  |
Loans held for sale | 63,470 |  |  | — |  |  | 63,470 |  |  | — |
Impaired loans not covered by loss share agreements | 128,365 |  |  | — |  |  | — |  |  | 128,365 |
June 30, 2011 |  |  |  |  |  |  |
Loans held for sale | 56,004 |  |  | — |  |  | 56,004 |  |  | — |
Impaired loans not covered by loss share agreements | 101,245 |  |  | — |  |  | — |  |  | 101,245 |
Schedule of Fair Value Measurements Of Other Real Estate Opportunites [Table Text Block] | The following table provides information regarding OREO for the three- and six-month periods ended June 30, 2012 and 2011.
| Three Months Ended June 30 |  | Six Months Ended June 30
| 2012 |  | 2011 |  | 2012 |  | 2011
Current year foreclosures: |  |  |  |  |  |  |
Covered under loss share agreements | $ | 41,098 |  |  | $ | 68,375 |  |  | $ | 61,630 |  |  | $ | 109,175 |
Not covered under loss share agreements | 12,475 |  |  | 19,765 |  |  | 18,783 |  |  | 13,636 |
Loan charge-offs recorded due to the measurement and initial recognition of OREO: |  |  |  |  |  |  |
Covered under loss share agreements | 7,392 |  |  | 7,447 |  |  | 8,351 |  |  | 7,447 |
Not covered under loss share agreements | 130 |  |  | 1,385 |  |  | 588 |  |  | 2,053 |
Write-downs recorded subsequent to foreclosure for OREO: |  |  |  |  |  |  |
Covered under loss share agreements | 11,137 |  |  | 11,431 |  |  | 11,259 |  |  | 15,997 |
Not covered under loss share agreements | 2,629 |  |  | 2,433 |  |  | 3,112 |  |  | 1,684 |
Fair value of OREO remeasured in current period: |  |  |  |  |  |  |
Covered under loss share agreements | 24,136 |  |  | 7,759 |  |  | 33,697 |  |  | 12,572 |
Not covered under loss share agreements | 9,301 |  |  | 17,272 |  |  | 12,893 |  |  | 6,567 |

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- Definition Tabular disclosure of assets and liabilities by class, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). The disclosures that may be required or desired include: (a) the fair value measurements recorded during the period and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 -Subparagraph a, b -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 5 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19296-110258 + Details
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- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 14 -Subparagraph a -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 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 15 -Subparagraph b-d -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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13476-108611 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10 -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 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6947722&loc=d3e13467-108611 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 18 -Subparagraph c(2), d, e, f -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 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph a, c(1), c(2), c(3), d -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 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 19 -Subparagraph a, b, c(1), d(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. + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 820 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6925170&loc=d3e19190-110258 + Details
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