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Allowance for Loan and Lease Losses (Allocation of Allowance for Loan and Lease Losses) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2012 | Mar. 31, 2011 | Dec. 31, 2011
Total impaired noncovered loans and leases | $ 112,030 | $ 123,728 | $ 122,135
Average balance | 116,623 | 115,362 |
Unpaid principal balance | 126,877 | 124,802 |
Interest Income Recognized | 787 | 1,065 |
Troubled debt restructurings | 318,323 |  |
Construction and Land Development - Commercial [Member] |  |  |
Total impaired noncovered loans and leases | 19,768 | 30,369 | 24,994
Average balance | 23,129 | 29,181 |
Unpaid principal balance | 33,430 | 29,018 |
Interest Income Recognized | 58 | 72 |
Commercial Mortgage [Member] |  |  |
Total impaired noncovered loans and leases | 63,366 | 69,017 | 65,527
Average balance | 64,206 | 65,364 |
Unpaid principal balance | 64,551 | 71,442 |
Interest Income Recognized | 530 | 738 |
Other Commercial Real Estate [Member] |  |  |
Total impaired noncovered loans and leases | 1,521 | 946 | 2,580
Average balance | 2,050 | 955 |
Unpaid principal balance | 1,521 | 946 |
Interest Income Recognized | 15 | 10 |
Commercial And Industrial [Member] |  |  |
Total impaired noncovered loans and leases | 12,598 | 14,631 | 14,268
Average balance | 12,466 | 11,706 |
Unpaid principal balance | 12,598 | 14,631 |
Interest Income Recognized | 66 | 165 |
Lease Financing [Member] |  |  |
Total impaired noncovered loans and leases | 79 | 963 | 322
Average balance | 201 | 828 |
Unpaid principal balance | 79 | 963 |
Interest Income Recognized | 1 | 12 |
Other Loans [Member] |  |  |
Total impaired noncovered loans and leases | 0 | 0 | 0
Average balance | 0 | 38 |
Unpaid principal balance | 0 | 0 |
Interest Income Recognized | 0 | 0 |
Residential Mortgage [Member] |  |  |
Total impaired noncovered loans and leases | 10,438 | 7,186 | 9,776
Average balance | 10,107 | 6,674 |
Unpaid principal balance | 10,438 | 7,186 |
Interest Income Recognized | 90 | 60 |
Construction And Land Development - Non - Commercial [Member] |  |  |
Total impaired noncovered loans and leases | 3,345 | 514 | 3,676
Average balance | 3,510 | 514 |
Unpaid principal balance | 3,345 | 514 |
Interest Income Recognized | 23 | 6 |
Consumer [Member] |  |  |
Total impaired noncovered loans and leases | 915 | 102 | 992
Average balance | 954 | 102 |
Unpaid principal balance | 915 | 102 |
Interest Income Recognized | 4 | 2 |
With No Recorded Allowance [Member] |  |  |
Total impaired noncovered loans and leases | 14,574 | 10,368 | 19,973
With No Recorded Allowance [Member] | Construction and Land Development - Commercial [Member] |  |  |
Total impaired noncovered loans and leases | 0 | 0 | 0
With No Recorded Allowance [Member] | Commercial Mortgage [Member] |  |  |
Total impaired noncovered loans and leases | 8,773 | 3,210 | 11,840
With No Recorded Allowance [Member] | Other Commercial Real Estate [Member] |  |  |
Total impaired noncovered loans and leases | 0 | 0 | 1,022
With No Recorded Allowance [Member] | Commercial And Industrial [Member] |  |  |
Total impaired noncovered loans and leases | 5,801 | 7,158 | 7,111
With No Recorded Allowance [Member] | Lease Financing [Member] |  |  |
Total impaired noncovered loans and leases | 0 | 0 | 0
With No Recorded Allowance [Member] | Other Loans [Member] |  |  |
Total impaired noncovered loans and leases | 0 | 0 | 0
With No Recorded Allowance [Member] | Residential Mortgage [Member] |  |  |
Total impaired noncovered loans and leases | 0 | 0 | 0
With No Recorded Allowance [Member] | Construction And Land Development - Non - Commercial [Member] |  |  |
Total impaired noncovered loans and leases | 0 | 0 | 0
With No Recorded Allowance [Member] | Consumer [Member] |  |  |
Total impaired noncovered loans and leases | 0 | 0 | 0
With A Recorded Allowance [Member] |  |  |
Impaired noncovered loans and leases | 9,037 | 12,115 | 6,122
Total impaired noncovered loans and leases | 97,456 | 113,360 | 102,162
With A Recorded Allowance [Member] | Construction and Land Development - Commercial [Member] |  |  |
Impaired noncovered loans and leases | 2,487 | 6,170 | 1,027
Total impaired noncovered loans and leases | 19,768 | 30,369 | 24,994
With A Recorded Allowance [Member] | Commercial Mortgage [Member] |  |  |
Impaired noncovered loans and leases | 4,915 | 4,716 | 3,813
Total impaired noncovered loans and leases | 54,593 | 65,807 | 53,687
With A Recorded Allowance [Member] | Other Commercial Real Estate [Member] |  |  |
Impaired noncovered loans and leases | 196 | 62 | 114
Total impaired noncovered loans and leases | 1,521 | 946 | 1,558
With A Recorded Allowance [Member] | Commercial And Industrial [Member] |  |  |
Impaired noncovered loans and leases | 574 | 727 | 549
Total impaired noncovered loans and leases | 6,797 | 7,473 | 7,157
With A Recorded Allowance [Member] | Lease Financing [Member] |  |  |
Impaired noncovered loans and leases | 4 | 73 | 16
Total impaired noncovered loans and leases | 79 | 963 | 322
With A Recorded Allowance [Member] | Other Loans [Member] |  |  |
Impaired noncovered loans and leases | 0 | 0 | 0
Total impaired noncovered loans and leases | 0 | 0 | 0
With A Recorded Allowance [Member] | Residential Mortgage [Member] |  |  |
Impaired noncovered loans and leases | 674 | 354 | 411
Total impaired noncovered loans and leases | 10,438 | 7,186 | 9,776
With A Recorded Allowance [Member] | Construction And Land Development - Non - Commercial [Member] |  |  |
Impaired noncovered loans and leases | 145 | 5 | 145
Total impaired noncovered loans and leases | 3,345 | 514 | 3,676
With A Recorded Allowance [Member] | Consumer [Member] |  |  |
Impaired noncovered loans and leases | 42 | 8 | 47
Total impaired noncovered loans and leases | 915 | 102 | 992
Noncovered Loans [Member] |  |  |
Troubled debt restructurings | 42,246 |  |
Covered Loans [Member] | With No Recorded Allowance [Member] |  |  |
Loans with an adverse change in expected cash flows | $ 291,148 |  |

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- Definition Loans and Leases Receivable, Gross, Carrying Amount with No Adverse Change in Expected Cash Flows + References No definition available. + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953670-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953676-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6951948&loc=d3e18845-111554 + Details
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- Definition The average recorded investment related to impaired financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5212-111524 -Subparagraph (c)(1) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5258-111524 + Details
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- Definition The interest income recognized during the time within that period that the financing receivables were impaired. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5212-111524 -Subparagraph (c)(2) + Details
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- Definition The recorded investment related to impaired financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953550-111524 -Subparagraph (b) + Details
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- Definition Amount of allowance for credit losses related to recorded investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5212-111524 -Subparagraph (a)(3) + Details
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- Definition The unpaid principal balance related to impaired financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5212-111524 + Details
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