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Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (1) (Details) (USD $) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Dec. 31, 2011
Loan and Lease Receivables, Impaired [Abstract] |  |  |
Unpaid Principal Balance | $ 115,538,000 |  | $ 146,602,000
Total LHFI With No Related Allowance Recorded | 14,389,000 |  | 36,945,000
Total LHFI With An Allowance Recorded | 66,269,000 |  | 73,513,000
Total Carrying Amount | 80,658,000 |  | 110,458,000
Related Allowance | 13,651,000 |  | 12,664,000
Average Recorded Investment | 95,559,000 |  | 126,689,000
Maximum Concentration Of Loan as a Percentage of Total LHFI (in hundredths) | 10.00% |  |
Carrying amounts of nonaccrual LHFI considered for impairment analysis | 80,700,000 |  | 110,500,000
Nonaccrual Financing Receivable, Specifically Evaluated For Impairment | 36,500,000 |  | 68,900,000
Nonaccrual Financing Receivable, Allowance for Credit Losses, Specifically Evaluated For Impairment | 6,600,000 |  | 8,800,000
Nonaccrual Financing Receivable, Allowance For Credit Losses, Charge-offs, Specifically Evaluated For Impairment | 11,000,000 | 18,400,000 |
Nonaccrual Financing Receivable Specifically Evaluated For Impairment Recoveries | 0 | 6,200,000 |
Classified as Troubled Debt Restructuring - LHFI | 26,300,000 |  | 34,200,000
Minimum loan amount for loan to be individually assessed for impairment | 500,000 |  |
Nonaccrual Financing Receivable, Not Specifically Evaluated for Impairment | 44,200,000 |  | 41,600,000
Nonaccrual Financing Receivable, Allowance for Credit Losses, Not Specifically Evaluated for Impairment | 7,100,000 |  | 3,900,000
Financing Receivable, Related Allowance | 4,600,000 |  | 4,500,000
Financing Receivable, Related Charge-offs | 5,300,000 | 1,600,000 |
Real Estate Secured Financing Receivable [Member] | Construction Land Development And Other Financing Receivable [Member] |  |  |
Loan and Lease Receivables, Impaired [Abstract] |  |  |
Unpaid Principal Balance | 45,951,000 |  | 58,757,000
Total LHFI With No Related Allowance Recorded | 7,815,000 |  | 11,123,000
Total LHFI With An Allowance Recorded | 18,262,000 |  | 29,290,000
Total Carrying Amount | 26,077,000 |  | 40,413,000
Related Allowance | 4,829,000 |  | 6,547,000
Average Recorded Investment | 33,245,000 |  | 49,122,000
Real Estate Secured Financing Receivable [Member] | Secured by 1-4 Family Residential Properties[Member] |  |  |
Loan and Lease Receivables, Impaired [Abstract] |  |  |
Unpaid Principal Balance | 31,206,000 |  | 33,746,000
Total LHFI With No Related Allowance Recorded | 2,093,000 |  | 1,560,000
Total LHFI With An Allowance Recorded | 22,167,000 |  | 22,788,000
Total Carrying Amount | 24,260,000 |  | 24,348,000
Related Allowance | 1,373,000 |  | 1,348,000
Average Recorded Investment | 24,304,000 |  | 27,330,000
Real Estate Secured Financing Receivable [Member] | Secured by NonFarm, Nonresidential Properties [Member] |  |  |
Loan and Lease Receivables, Impaired [Abstract] |  |  |
Unpaid Principal Balance | 24,003,000 |  | 27,183,000
Total LHFI With No Related Allowance Recorded | 4,424,000 |  | 13,770,000
Total LHFI With An Allowance Recorded | 14,449,000 |  | 10,211,000
Total Carrying Amount | 18,873,000 |  | 23,981,000
Related Allowance | 3,259,000 |  | 2,431,000
Average Recorded Investment | 21,427,000 |  | 26,497,000
Real Estate Secured Financing Receivable [Member] | Other Real Estate Secured Financing Receivable [Member] |  |  |
Loan and Lease Receivables, Impaired [Abstract] |  |  |
Unpaid Principal Balance | 5,965,000 |  | 7,158,000
Total LHFI With No Related Allowance Recorded | 0 |  | 1,548,000
Total LHFI With An Allowance Recorded | 3,900,000 |  | 4,323,000
Total Carrying Amount | 3,900,000 |  | 5,871,000
Related Allowance | 855,000 |  | 1,007,000
Average Recorded Investment | 4,886,000 |  | 6,013,000
Commercial And Industrial Loans Financing Receivable [Member] |  |  |
Loan and Lease Receivables, Impaired [Abstract] |  |  |
Unpaid Principal Balance | 6,791,000 |  | 16,102,000
Total LHFI With No Related Allowance Recorded | 57,000 |  | 8,724,000
Total LHFI With An Allowance Recorded | 6,158,000 |  | 5,424,000
Total Carrying Amount | 6,215,000 |  | 14,148,000
Related Allowance | 2,995,000 |  | 1,137,000
Average Recorded Investment | 10,182,000 |  | 15,127,000
Consumer Loans Financing Receivable [Member] |  |  |
Loan and Lease Receivables, Impaired [Abstract] |  |  |
Unpaid Principal Balance | 670,000 |  | 1,097,000
Total LHFI With No Related Allowance Recorded | 0 |  | 0
Total LHFI With An Allowance Recorded | 411,000 |  | 825,000
Total Carrying Amount | 411,000 |  | 825,000
Related Allowance | 4,000 |  | 9,000
Average Recorded Investment | 618,000 |  | 1,468,000
Other Loans [Member] |  |  |
Loan and Lease Receivables, Impaired [Abstract] |  |  |
Unpaid Principal Balance | 952,000 |  | 2,559,000
Total LHFI With No Related Allowance Recorded | 0 |  | 220,000
Total LHFI With An Allowance Recorded | 922,000 |  | 652,000
Total Carrying Amount | 922,000 |  | 872,000
Related Allowance | 336,000 |  | 185,000
Average Recorded Investment | $ 897,000 |  | $ 1,132,000

X
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- Definition The maximum concentration for any loan concentration as a percentage of total loans held for investment. + References No definition available. + Details
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- Definition Amount of allowance for credit losses related to financing receivable that has undergone troubled debt restructuring. + References No definition available. + Details
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- Definition Reduction to the allowance for credit losses related to financing receivables, excluding covered loans, that have undergone troubled debt restructuring and deemed uncollectible. + References No definition available. + Details
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- Definition Amount of impaired financing receivable that does have an allowance recorded. + References No definition available. + Details
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- Definition The minimum loan amount for a nonaccrual LHFI to be assessed individually for impairment. + References No definition available. + Details
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- Definition The valuation allowance for nonaccrual financing receivables that are expected to be uncollectible that were not specifically evaluated for impairment. + References No definition available. + Details
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- Definition The valuation allowance for nonaccrual financing receivables that are expected to be uncollectible that were specifically evaluated for impairment. + References No definition available. + Details
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- Definition The balance of nonaccrual financing receivables that were specifically evaluated for impairment. + References No definition available. + Details
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- Definition Credit to income for nonaccrual financing receivables that are specifically evaluated for impairment and were expected to be uncollectible. + References No definition available. + Details
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- Definition Reduction to the allowance for credit losses related to nonaccrual financing receivables specifically evaluated for impairment. + References No definition available. + Details
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