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Allowance for Probable Loan Losses (Details 2) (USD $) In Thousands | Sep. 30, 2011 | Dec. 31, 2010
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Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans individually evaluated for impairment, Recorded Investment | $ 137,893 | $ 125,200
Loans individually evaluated for impairment, Allowance | 19,066 | 12,171
Loans collectively evaluated for impairment, Recorded Investment | 4,984,307 | 5,284,803
Loans collectively evaluated for impairment, Allowance | 59,340 | 72,311
Commercial |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans individually evaluated for impairment, Recorded Investment | 23,673 | 23,426
Loans individually evaluated for impairment, Allowance | 8,049 | 8,138
Loans collectively evaluated for impairment, Recorded Investment | 746,430 | 807,098
Loans collectively evaluated for impairment, Allowance | 11,531 | 13,908
Commercial real estate: other construction and land development |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans individually evaluated for impairment, Recorded Investment | 61,286 | 77,207
Loans individually evaluated for impairment, Allowance | 3,000 | 592
Loans collectively evaluated for impairment, Recorded Investment | 1,194,082 | 1,396,264
Loans collectively evaluated for impairment, Allowance | 15,282 | 26,103
Commercial real estate: farmland and commercial |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans individually evaluated for impairment, Recorded Investment | 47,301 | 21,844
Loans individually evaluated for impairment, Allowance | 7,923 | 3,441
Loans collectively evaluated for impairment, Recorded Investment | 1,656,066 | 1,666,719
Loans collectively evaluated for impairment, Allowance | 16,021 | 12,899
Commercial real estate: multifamily |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans individually evaluated for impairment, Recorded Investment | 431 | 473
Loans collectively evaluated for impairment, Recorded Investment | 116,978 | 96,318
Loans collectively evaluated for impairment, Allowance | 1,049 | 53
Residential: first lien |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans individually evaluated for impairment, Recorded Investment | 2,181 | 2,015
Loans individually evaluated for impairment, Allowance | 94 |
Loans collectively evaluated for impairment, Recorded Investment | 520,158 | 531,440
Loans collectively evaluated for impairment, Allowance | 5,705 | 10,059
Residential: junior lien |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans individually evaluated for impairment, Recorded Investment | 1,722 | 199
Loans collectively evaluated for impairment, Recorded Investment | 404,824 | 415,328
Loans collectively evaluated for impairment, Allowance | 6,126 | 2,611
Consumer |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans individually evaluated for impairment, Recorded Investment | 1,299 | 29
Loans collectively evaluated for impairment, Recorded Investment | 99,995 | 126,018
Loans collectively evaluated for impairment, Allowance | 2,118 | 6,241
Foreign |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans individually evaluated for impairment, Recorded Investment |  | 7
Loans collectively evaluated for impairment, Recorded Investment | 245,774 | 245,618
Loans collectively evaluated for impairment, Allowance | $ 1,508 | $ 437

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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524 -Subparagraph (g) + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524 -Subparagraph (h) + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524 -Subparagraph (h) + Details
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