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Allowance for Probable Loan Losses (Non-Accrual) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | $ 47,685,000 | $ 63,559,000 | $ 62,823,000
Reduced interest income on non-accrual loans | 3,298,000 | 4,013,000 | 4,088,000
Accruing loans contractually past due 90 days or more as to principal or interest payments | 11,616,000 | 9,988,000 | $ 7,197,000
Commercial |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 30,894,000 | 40,121,000 |
Accruing loans contractually past due 90 days or more as to principal or interest payments | 2,566,000 | 2,890,000 |
Commercial Real Estate: Other Construction and Land Development |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 3,668,000 | 8,621,000 |
Accruing loans contractually past due 90 days or more as to principal or interest payments |  | 439,000 |
Commercial real estate: farmland and commercial |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 11,543,000 | 11,903,000 |
Accruing loans contractually past due 90 days or more as to principal or interest payments | 3,373,000 | 1,711,000 |
Commercial real estate: multifamily |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 777,000 | 835,000 |
Accruing loans contractually past due 90 days or more as to principal or interest payments | 49,000 | 21,000 |
Residential: first lien |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 383,000 | 527,000 |
Accruing loans contractually past due 90 days or more as to principal or interest payments | 4,093,000 | 3,901,000 |
Residential: junior lien |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 21,000 | 1,523,000 |
Accruing loans contractually past due 90 days or more as to principal or interest payments | 640,000 | 431,000 |
Consumer |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 34,000 | 29,000 |
Accruing loans contractually past due 90 days or more as to principal or interest payments | 453,000 | 482,000 |
Foreign |  |  |
Loan loss allowances, financing receivable past due |  |  |
Non-accrual loans, total | 365,000 |  |
Accruing loans contractually past due 90 days or more as to principal or interest payments | $ 442,000 | $ 113,000 |

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- Definition Represents the reduction in interest income on recorded investment in financing receivables that are on nonaccrual status. + References No definition available. + Details
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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + 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=35738203&loc=d3e5111-111524 + Details
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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=35738203&loc=d3e5111-111524 + Details
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