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Allowance for Probable Loan Losses (Non-accrual Basis By Loan Class) (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
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Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | $ 30,862 | $ 47,685
Commercial |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 14,808 | 30,894
Commercial Real Estate: Other Construction and Land Development |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 3,413 | 3,668
Commercial Real Estate: Farmland & Commercial |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 11,383 | 11,543
Commercial Real Estate: Multifamily |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 164 | 777
Residential First Lien |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 649 | 383
Residential Junior Lien |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 44 | 21
Consumer |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | 36 | 34
Foreign |  |
Loan loss allowances, financing receivable past due |  |
Non-accrual loans, total | $ 365 | $ 365

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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524 + Details
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