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Allowance For Loan Losses (Schedule Of Allowance For Loan Losses) (Details) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2009
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Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | $ 120,174 |  | $ 148,530 | $ 143,575 |  | $ 120,676 | $ 119,674 | $ 116,717
Total ending loan balance | 4,710,513 |  |  | 4,732,685 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 2.55% |  |  | 3.03% |  |  |  |
Recorded Investment | 4,726,027 |  |  | 4,750,190 |  |  |  |
Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 42,797 |  |  | 66,904 |  |  |  |
Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 77,377 |  |  | 76,671 |  |  |  |
Loans Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 200,400 |  |  | 250,933 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 21.36% |  |  | 26.66% |  |  |  |
Recorded Investment | 200,400 |  |  | 250,933 |  |  |  |
Loans Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 4,510,113 |  |  | 4,481,752 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 1.72% |  |  | 1.71% |  |  |  |
Recorded Investment | 4,525,627 |  |  | 4,499,257 |  |  |  |
Commercial, Financial And Agricultural [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 16,709 |  | 11,791 | 11,555 |  |  |  |
Total ending loan balance | 755,793 |  |  | 737,902 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 2.21% |  |  | 1.57% |  |  |  |
Recorded Investment | 758,419 |  |  | 740,788 |  |  |  |
Commercial, Financial And Agricultural [Member] | Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 7,367 |  |  | 3,028 |  |  |  |
Commercial, Financial And Agricultural [Member] | Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 9,342 |  |  | 8,527 |  |  |  |
Commercial, Financial And Agricultural [Member] | Loans Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 24,008 |  |  | 19,205 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 30.69% |  |  | 15.77% |  |  |  |
Recorded Investment | 24,008 |  |  | 19,205 |  |  |  |
Commercial, Financial And Agricultural [Member] | Loans Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 731,785 |  |  | 718,697 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 1.28% |  |  | 1.19% |  |  |  |
Recorded Investment | 734,411 |  |  | 721,583 |  |  |  |
Commercial Real Estate [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 23,307 |  | 25,220 | 24,369 |  |  |  |
Total ending loan balance | 1,257,292 | [1] |  | 1,226,616 | [1] |  |  |
Allowance for loan losses as a percentage of loan balance | 1.85% |  |  | 1.99% |  |  |  |
Recorded Investment | 1,262,067 | [1] |  | 1,231,420 | [1] |  |  |
Commercial Real Estate [Member] | Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 10,050 |  |  | 12,652 |  |  |  |
Commercial Real Estate [Member] | Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 13,257 |  |  | 11,717 |  |  |  |
Commercial Real Estate [Member] | Loans Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 47,243 |  |  | 57,930 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 21.27% |  |  | 21.84% |  |  |  |
Recorded Investment | 47,243 |  |  | 57,930 |  |  |  |
Commercial Real Estate [Member] | Loans Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 1,210,049 |  |  | 1,168,686 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 1.10% |  |  | 1.00% |  |  |  |
Recorded Investment | 1,214,824 |  |  | 1,173,490 |  |  |  |
Construction Real Estate [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 40,113 |  | 71,835 | 70,462 |  |  |  |
Total ending loan balance | 330,332 |  |  | 406,480 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 12.14% |  |  | 17.33% |  |  |  |
Recorded Investment | 331,163 |  |  | 407,533 |  |  |  |
Construction Real Estate [Member] | Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 20,205 |  |  | 45,312 |  |  |  |
Construction Real Estate [Member] | Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 19,908 |  |  | 25,150 |  |  |  |
Construction Real Estate [Member] | Loans Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 80,532 |  |  | 113,571 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 25.09% |  |  | 39.90% |  |  |  |
Recorded Investment | 80,532 |  |  | 113,571 |  |  |  |
Construction Real Estate [Member] | Loans Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 249,800 |  |  | 292,909 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 7.97% |  |  | 8.59% |  |  |  |
Recorded Investment | 250,631 |  |  | 293,962 |  |  |  |
Residential Real Estate [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 32,297 |  | 32,415 | 30,259 |  |  |  |
Total ending loan balance | 1,713,568 |  |  | 1,692,209 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 1.88% |  |  | 1.79% |  |  |  |
Recorded Investment | 1,717,878 |  |  | 1,697,670 |  |  |  |
Residential Real Estate [Member] | Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 5,152 |  |  | 5,912 |  |  |  |
Residential Real Estate [Member] | Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 27,145 |  |  | 24,347 |  |  |  |
Residential Real Estate [Member] | Loans Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 48,594 |  |  | 60,227 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 10.60% |  |  | 9.82% |  |  |  |
Recorded Investment | 48,594 |  |  | 60,227 |  |  |  |
Residential Real Estate [Member] | Loans Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 1,664,974 |  |  | 1,631,982 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 1.63% |  |  | 1.49% |  |  |  |
Recorded Investment | 1,669,284 |  |  | 1,637,443 |  |  |  |
Consumer [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 7,744 |  | 7,265 | 6,925 |  |  |  |
Total ending loan balance | 651,250 |  |  | 666,871 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 1.19% |  |  | 1.04% |  |  |  |
Recorded Investment | 654,188 |  |  | 670,116 |  |  |  |
Consumer [Member] | Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 23 |  |  |  |  |  |  |
Consumer [Member] | Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 7,721 |  |  | 6,925 |  |  |  |
Consumer [Member] | Loans Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 23 |  |  |  |  |  |  |
Allowance for loan losses as a percentage of loan balance |  |  |  |  |  |  |  |
Recorded Investment | 23 |  |  |  |  |  |  |
Consumer [Member] | Loans Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 651,227 |  |  | 666,871 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 1.19% |  |  | 1.04% |  |  |  |
Recorded Investment | 654,165 |  |  | 670,116 |  |  |  |
Leases [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 4 |  | 4 | 5 |  |  |  |
Total ending loan balance | 2,278 |  |  | 2,607 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 0.18% |  |  | 0.19% |  |  |  |
Recorded Investment | 2,312 |  |  | 2,663 |  |  |  |
Leases [Member] | Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance |  |  |  |  |  |  |  |
Leases [Member] | Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending allowance balance | 4 |  |  | 5 |  |  |  |
Leases [Member] | Loans Individually Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance |  |  |  |  |  |  |  |
Allowance for loan losses as a percentage of loan balance |  |  |  |  |  |  |  |
Recorded Investment |  |  |  |  |  |  |  |
Leases [Member] | Loans Collectively Evaluated For Impairment [Member] |  |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |
Total ending loan balance | 2,278 |  |  | 2,607 |  |  |  |
Allowance for loan losses as a percentage of loan balance | 0.18% |  |  | 0.19% |  |  |  |
Recorded Investment | $ 2,312 |  |  | $ 2,663 |  |  |  |
[1] | Included within commercial, financial and agricultural loans, commercial real estate loans, and Vision commercial land and development loans are an immaterial amount of consumer loans that are not broken out by class.

X
- Definition Total of loans held-for-sale and held-in-portfolio net of unearned income, unamortized loan origination and other fees and costs, and purchased premiums or discounts. + References No definition available. + Details
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- Definition Loans And Leases Receivable Ratio Of Allowance For Loan Losses To Total Loans + References No definition available. + Details
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- Definition The amount of the recorded investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, accounts receivable (with terms exceeding one year), notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Receivable -URI http://asc.fasb.org/extlink&oid=6953735 + Details
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- Definition The allowance for loan and lease losses represents the reserve to cover probable credit losses related to specifically identified loans and leases, as well as probable credit losses inherent in the remainder of the loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for loan losses in connection with business combinations determined to be appropriate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Chapter V -Section 563c.102 -Paragraph 8 -Subparagraph a(ii) -Subsection 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 SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section L -Subsection 1 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 20 -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(d)) -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 d Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 8, 9 -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 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544 + Details
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