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Allowance for Probable Loan Losses (Details 4) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013
Interest Recognized |  |
Loans accounted for as troubled debt restructuring | $ 19,148,000 | $ 20,358,000
Period of charge off for past due unsecured commercial loans | 90 days |
Class of financing receivable |  |
Recorded investment: |  |
Total impaired loans with related allowance | 31,197,000 | 31,255,000
Total impaired loans with no related allowance | 45,066,000 | 44,638,000
Unpaid principal balance: |  |
Total impaired loans with an allowance recorded | 31,553,000 | 34,699,000
Total impaired loans with no related allowance recorded | 46,539,000 | 45,986,000
Related Allowance | 20,942,000 | 16,002,000
Average recorded investment: |  |
Total impaired loans with an allowance recorded | 30,809,000 | 31,244,000
Total impaired loans with no related allowance recorded | 44,098,000 | 51,616,000
Interest Recognized |  |
Total impaired loans with an allowance recorded | 23,000 | 130,000
Total impaired loans with no related allowance recorded | 112,000 | 374,000
Commercial | Class of financing receivable |  |
Recorded investment: |  |
Total impaired loans with related allowance | 17,684,000 | 17,178,000
Total impaired loans with no related allowance | 17,855,000 | 17,005,000
Unpaid principal balance: |  |
Total impaired loans with an allowance recorded | 17,674,000 | 17,177,000
Total impaired loans with no related allowance recorded | 17,876,000 | 17,023,000
Related Allowance | 17,424,000 | 12,234,000
Average recorded investment: |  |
Total impaired loans with an allowance recorded | 17,287,000 | 18,019,000
Total impaired loans with no related allowance recorded | 17,060,000 | 16,778,000
Interest Recognized |  |
Total impaired loans with an allowance recorded |  | 38,000
Total impaired loans with no related allowance recorded | 1,000 | 2,000
Commercial real estate: other construction and land development | Class of financing receivable |  |
Recorded investment: |  |
Total impaired loans with related allowance | 6,898,000 | 6,818,000
Total impaired loans with no related allowance | 6,660,000 | 7,158,000
Unpaid principal balance: |  |
Total impaired loans with an allowance recorded | 6,906,000 | 6,825,000
Total impaired loans with no related allowance recorded | 6,704,000 | 7,187,000
Related Allowance | 852,000 | 852,000
Average recorded investment: |  |
Total impaired loans with an allowance recorded | 6,898,000 | 6,058,000
Total impaired loans with no related allowance recorded | 6,801,000 | 18,164,000
Interest Recognized |  |
Total impaired loans with no related allowance recorded | 18,000 | 74,000
Commercial real estate: farmland and commercial | Class of financing receivable |  |
Recorded investment: |  |
Total impaired loans with related allowance | 6,615,000 | 7,259,000
Total impaired loans with no related allowance | 8,992,000 | 8,779,000
Unpaid principal balance: |  |
Total impaired loans with an allowance recorded | 6,963,000 | 10,697,000
Total impaired loans with no related allowance recorded | 10,310,000 | 9,949,000
Related Allowance | 2,666,000 | 2,916,000
Average recorded investment: |  |
Total impaired loans with an allowance recorded | 6,624,000 | 7,167,000
Total impaired loans with no related allowance recorded | 8,656,000 | 7,313,000
Interest Recognized |  |
Total impaired loans with an allowance recorded | 23,000 | 92,000
Commercial real estate: multifamily | Class of financing receivable |  |
Recorded investment: |  |
Total impaired loans with no related allowance | 280,000 | 295,000
Unpaid principal balance: |  |
Total impaired loans with no related allowance recorded | 280,000 | 295,000
Average recorded investment: |  |
Total impaired loans with no related allowance recorded | 285,000 | 322,000
Residential: first lien | Class of financing receivable |  |
Recorded investment: |  |
Total impaired loans with no related allowance | 6,273,000 | 6,153,000
Unpaid principal balance: |  |
Total impaired loans with no related allowance recorded | 6,337,000 | 6,258,000
Average recorded investment: |  |
Total impaired loans with no related allowance recorded | 6,287,000 | 4,860,000
Interest Recognized |  |
Total impaired loans with no related allowance recorded | 63,000 | 179,000
Residential: junior lien | Class of financing receivable |  |
Recorded investment: |  |
Total impaired loans with no related allowance | 3,123,000 | 3,206,000
Unpaid principal balance: |  |
Total impaired loans with no related allowance recorded | 3,142,000 | 3,226,000
Average recorded investment: |  |
Total impaired loans with no related allowance recorded | 3,133,000 | 2,347,000
Interest Recognized |  |
Total impaired loans with no related allowance recorded | 24,000 | 99,000
Consumer | Class of financing receivable |  |
Recorded investment: |  |
Total impaired loans with no related allowance | 1,453,000 | 1,606,000
Unpaid principal balance: |  |
Total impaired loans with no related allowance recorded | 1,460,000 | 1,612,000
Average recorded investment: |  |
Total impaired loans with no related allowance recorded | 1,444,000 | 1,380,000
Interest Recognized |  |
Total impaired loans with no related allowance recorded | 1,000 | 1,000
Foreign | Class of financing receivable |  |
Recorded investment: |  |
Total impaired loans with no related allowance | 430,000 | 436,000
Unpaid principal balance: |  |
Total impaired loans with no related allowance recorded | 430,000 | 436,000
Average recorded investment: |  |
Total impaired loans with no related allowance recorded | 432,000 | 452,000
Interest Recognized |  |
Total impaired loans with no related allowance recorded | $ 5,000 | $ 19,000

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