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Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (4) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Balance at beginning of period |  |  | $ 89,518 |
Provision for loan losses, LHFI | 3,358 | 7,978 | 7,301 | 23,631
Balance at end of period | 83,526 |  | 83,526 |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |
Total | 83,526 |  | 83,526 |
Number of Loan Types For Commercial Portfolio | 9 |  | 9 |
Number of Risk Rate Factors For Commercial Loans | 360 |  | 360 |
Number of Unique Qualitative Factors Used To Analyze Commercial Loans | 8 |  | 8 |
The Minimum Score For Qualitative Risk Factor |  |  | 0 |
The Maximum Score For Qualitative Risk Factor |  |  | 100 |
Allowance for Loan Loses, LHFI [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Balance at beginning of period |  |  | 89,518 | 93,510
Loans charged-off |  |  | (22,547) | (37,312)
Recoveries |  |  | 9,254 | 9,634
Net charge-offs |  |  | (13,293) | (27,678)
Provision for loan losses, LHFI |  |  | 7,301 | 23,631
Balance at end of period | 83,526 | 89,463 | 83,526 | 89,463
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |
Individually | 13,651 | 8,962 | 13,651 | 8,962
Collectively | 69,875 | 80,501 | 69,875 | 80,501
Total | 83,526 | 89,463 | 83,526 | 89,463
Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] | Allowance for Loan Loses, LHFI [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Balance at beginning of period |  |  | 27,220 | 35,562
Loans charged-off |  |  | (2,944) | (14,375)
Recoveries |  |  | 0 | 0
Provision for loan losses, LHFI |  |  | (1,732) | 8,353
Balance at end of period | 22,544 | 29,540 | 22,544 | 29,540
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |
Individually | 4,829 | 4,165 | 4,829 | 4,165
Collectively | 17,715 | 25,375 | 17,715 | 25,375
Total | 22,544 | 29,540 | 22,544 | 29,540
Real Estate Secured Financing Receivable [Member] | Secured by 1-4 Family Residential Properties[Member] | Allowance for Loan Loses, LHFI [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Balance at beginning of period |  |  | 12,650 | 13,051
Loans charged-off |  |  | (3,238) | (7,461)
Recoveries |  |  | 364 | 410
Provision for loan losses, LHFI |  |  | 2,203 | 5,538
Balance at end of period | 11,979 | 11,538 | 11,979 | 11,538
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |
Individually | 1,373 | 540 | 1,373 | 540
Collectively | 10,606 | 10,998 | 10,606 | 10,998
Total | 11,979 | 11,538 | 11,979 | 11,538
Real Estate Secured Financing Receivable [Member] | Secured by NonFarm, Nonresidential Properties [Member] | Allowance for Loan Loses, LHFI [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Balance at beginning of period |  |  | 24,358 | 20,980
Loans charged-off |  |  | (5,409) | (3,124)
Recoveries |  |  | 0 | 0
Provision for loan losses, LHFI |  |  | 3,823 | 4,882
Balance at end of period | 22,772 | 22,738 | 22,772 | 22,738
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |
Individually | 3,259 | 1,510 | 3,259 | 1,510
Collectively | 19,513 | 21,228 | 19,513 | 21,228
Total | 22,772 | 22,738 | 22,772 | 22,738
Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] | Allowance for Loan Loses, LHFI [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Balance at beginning of period |  |  | 3,079 | 1,582
Loans charged-off |  |  | (1,602) | (577)
Recoveries |  |  | 0 | 0
Provision for loan losses, LHFI |  |  | 733 | 1,969
Balance at end of period | 2,210 | 2,974 | 2,210 | 2,974
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |
Individually | 855 | 1,008 | 855 | 1,008
Collectively | 1,355 | 1,966 | 1,355 | 1,966
Total | 2,210 | 2,974 | 2,210 | 2,974
Commercial And Industrial Loans [Member] | Allowance for Loan Loses, LHFI [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Balance at beginning of period |  |  | 15,868 | 14,775
Loans charged-off |  |  | (2,985) | (3,811)
Recoveries |  |  | 2,123 | 2,259
Provision for loan losses, LHFI |  |  | 3,428 | 2,529
Balance at end of period | 18,434 | 15,752 | 18,434 | 15,752
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |
Individually | 2,995 | 1,454 | 2,995 | 1,454
Collectively | 15,439 | 14,298 | 15,439 | 14,298
Total | 18,434 | 15,752 | 18,434 | 15,752
Consumer Loans [Member] | Allowance for Loan Loses, LHFI [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Balance at beginning of period |  |  | 3,656 | 5,400
Loans charged-off |  |  | (2,360) | (4,410)
Recoveries |  |  | 4,189 | 4,475
Provision for loan losses, LHFI |  |  | (2,620) | (1,474)
Balance at end of period | 2,865 | 3,991 | 2,865 | 3,991
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |
Individually | 4 | 10 | 4 | 10
Collectively | 2,861 | 3,981 | 2,861 | 3,981
Total | 2,865 | 3,991 | 2,865 | 3,991
Other Loans [Member] | Allowance for Loan Loses, LHFI [Member] |  |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |  |
Balance at beginning of period |  |  | 2,687 | 2,160
Loans charged-off |  |  | (4,009) | (3,554)
Recoveries |  |  | 2,578 | 2,490
Provision for loan losses, LHFI |  |  | 1,466 | 1,834
Balance at end of period | 2,722 | 2,930 | 2,722 | 2,930
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |
Individually | 336 | 275 | 336 | 275
Collectively | 2,386 | 2,655 | 2,386 | 2,655
Total | $ 2,722 | $ 2,930 | $ 2,722 | $ 2,930

X
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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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