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Allowance for Probable Loan Losses (Impairment By Loan Class) (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans Individually Evaluated for Impairment, Recorded Investment | $ 35,440 | $ 63,204
Loans Individually Evaluated for Impairment, Allowance | 576 | 434
Loans Collectively Evaluated for Impairment, Recorded Investment | 6,403,980 | 6,284,968
Loans Collectively Evaluated for Impairment, Allowance | 62,277 | 67,253
Commercial |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans Individually Evaluated for Impairment, Recorded Investment | 17,933 | 17,947
Loans Individually Evaluated for Impairment, Allowance | 460 | 300
Loans Collectively Evaluated for Impairment, Recorded Investment | 1,072,061 | 1,068,520
Loans Collectively Evaluated for Impairment, Allowance | 16,136 | 27,605
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 | 2,166 | 2,455
Loans Individually Evaluated for Impairment, Allowance | 116 | 116
Loans Collectively Evaluated for Impairment, Recorded Investment | 1,779,787 | 1,681,095
Loans Collectively Evaluated for Impairment, Allowance | 14,587 | 11,559
Commercial Real Estate: Farmland and Commercial |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans Individually Evaluated for Impairment, Recorded Investment | 6,020 | 33,123
Loans Individually Evaluated for Impairment, Allowance |  | 18
Loans Collectively Evaluated for Impairment, Recorded Investment | 2,011,747 | 2,010,162
Loans Collectively Evaluated for Impairment, Allowance | 18,296 | 16,645
Commercial Real Estate: Multifamily |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans Individually Evaluated for Impairment, Recorded Investment | 664 | 476
Loans Collectively Evaluated for Impairment, Recorded Investment | 212,916 | 192,440
Loans Collectively Evaluated for Impairment, Allowance | 1,574 | 1,109
Residential First Lien |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans Individually Evaluated for Impairment, Recorded Investment | 6,387 | 6,852
Loans Collectively Evaluated for Impairment, Recorded Investment | 420,951 | 425,925
Loans Collectively Evaluated for Impairment, Allowance | 3,591 | 2,950
Residential Junior Lien |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans Individually Evaluated for Impairment, Recorded Investment | 799 | 723
Loans Collectively Evaluated for Impairment, Recorded Investment | 708,784 | 700,025
Loans Collectively Evaluated for Impairment, Allowance | 6,793 | 6,103
Consumer |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans Individually Evaluated for Impairment, Recorded Investment | 1,141 | 1,281
Loans Collectively Evaluated for Impairment, Recorded Investment | 46,606 | 48,262
Loans Collectively Evaluated for Impairment, Allowance | 450 | 440
Foreign |  |
Loan loss allowances, impaired financing receivable, evaluated individually or collectively |  |
Loans Individually Evaluated for Impairment, Recorded Investment | 330 | 347
Loans Collectively Evaluated for Impairment, Recorded Investment | 151,128 | 158,539
Loans Collectively Evaluated for Impairment, Allowance | $ 850 | $ 842

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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 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible 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 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + 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 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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