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Allowance for Probable Loan Losses (Tables) | 12 Months Ended
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Dec. 31, 2013
Allowance for Probable Loan Losses |
Summary of the changes in the allowance for probable loan losses, by loan class |
|  | December 31, 2013 |
--- | --- | --- | ---
|  | Domestic |  |  |  | Foreign |  |  |
|  | Commercial |  | Commercial real estate: other construction & land development |  | Commercial real estate: farmland & commercial |  | Commercial real estate: multifamily |  | Residential: first lien |  | Residential: junior lien |  | Consumer |  | Foreign |  | Total |
|  | (Dollars in Thousands) |  |  |
Balance at December 31, |  | $ | 11,632 |  | $ | 12,720 |  | $ | 21,880 |  | $ | 694 |  | $ | 4,390 |  | $ | 4,448 |  | $ | 1,289 |  | $ | 1,140 |  | $ | 58,193 |
Losses charge to allowance |  |  | (11,737 | ) |  | (278 | ) |  | (600 | ) |  | (5 | ) |  | (632 | ) |  | (620 | ) |  | (561 | ) |  | (22 | ) |  | (14,455 | )
Recoveries credited to allowance |  |  | 2,690 |  |  | 87 |  |  | 152 |  |  | — |  |  | 61 |  |  | 298 |  |  | 162 |  |  | 5 |  |  | 3,455 |
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Net losses charged to allowance |  |  | (9,047 | ) |  | (191 | ) |  | (448 | ) |  | (5 | ) |  | (571 | ) |  | (322 | ) |  | (399 | ) |  | (17 | ) |  | (11,000 | )
Provision (credit) charged to operations |  |  | 19,848 |  |  | 12 |  |  | 3,035 |  |  | 87 |  |  | (7 | ) |  | 123 |  |  | (140 | ) |  | 10 |  |  | 22,968 |
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Balance at December 31, |  | $ | 22,433 |  | $ | 12,541 |  | $ | 24,467 |  | $ | 776 |  | $ | 3,812 |  | $ | 4,249 |  | $ | 750 |  | $ | 1,133 |  | $ | 70,161 |
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|  | December 31, 2012 |
--- | --- | --- | ---
|  | Domestic |  |  |  | Foreign |  |  |
|  | Commercial |  | Commercial real estate: other construction & land development |  | Commercial real estate: farmland & commercial |  | Commercial real estate: multifamily |  | Residential: first lien |  | Residential: junior lien |  | Consumer |  | Foreign |  | Total |
|  | (Dollars in Thousands) |  |  |
Balance at December 31, |  | $ | 26,617 |  | $ | 19,940 |  | $ | 24,227 |  | $ | 1,003 |  | $ | 4,562 |  | $ | 4,760 |  | $ | 1,724 |  | $ | 1,359 |  | $ | 84,192 |
Losses charge to allowance |  |  | (34,721 | ) |  | (7,617 | ) |  | (13,724 | ) |  | — |  |  | (227 | ) |  | (1,190 | ) |  | (756 | ) |  | (111 | ) |  | (58,346 | )
Recoveries credited to allowance |  |  | 3,547 |  |  | 229 |  |  | 220 |  |  | — |  |  | 13 |  |  | 195 |  |  | 184 |  |  | — |  |  | 4,388 |
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Net losses charged to allowance |  |  | (31,174 | ) |  | (7,388 | ) |  | (13,504 | ) |  | — |  |  | (214 | ) |  | (995 | ) |  | (572 | ) |  | (111 | ) |  | (53,958 | )
Provision (credit) charged to operations |  |  | 16,189 |  |  | 168 |  |  | 11,157 |  |  | (309 | ) |  | 42 |  |  | 683 |  |  | 137 |  |  | (108 | ) |  | 27,959 |
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Balance at December 31, |  | $ | 11,632 |  | $ | 12,720 |  | $ | 21,880 |  | $ | 694 |  | $ | 4,390 |  | $ | 4,448 |  | $ | 1,289 |  | $ | 1,140 |  | $ | 58,193 |
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Loans individually or collectively evaluated for impairment and related allowance, by loan class |
|  | December 31, 2013 |
--- | --- | --- | ---
|  | Loans individually evaluated for impairment |  | Loans collectively evaluated for impairment |
|  | Recorded Investment |  | Allowance |  | Recorded Investment |  | Allowance |
|  | (Dollars in Thousands) |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 34,183 |  | $ | 12,234 |  | $ | 1,008,459 |  | $ | 10,199 |
Commercial real estate: other construction & land development |  |  | 13,976 |  |  | 852 |  |  | 1,194,532 |  |  | 11,689 |
Commercial real estate: farmland & commercial |  |  | 16,038 |  |  | 2,916 |  |  | 1,734,001 |  |  | 21,551 |
Commercial real estate: multifamily |  |  | 295 |  |  | — |  |  | 101,803 |  |  | 776 |
Residential: first lien |  |  | 6,153 |  |  | — |  |  | 432,309 |  |  | 3,812 |
Residential: junior lien |  |  | 3,206 |  |  | — |  |  | 406,024 |  |  | 4,249 |
Consumer |  |  | 1,606 |  |  | — |  |  | 64,808 |  |  | 750 |
Foreign |  |  | 436 |  |  | — |  |  | 181,406 |  |  | 1,133 |
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Total |  | $ | 75,893 |  | $ | 16,002 |  | $ | 5,123,342 |  | $ | 54,159 |
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|  | December 31, 2012 |
--- | --- | --- | ---
|  | Loans individually evaluated for impairment |  | Loans collectively evaluated for impairment |
|  | Recorded Investment |  | Allowance |  | Recorded Investment |  | Allowance |
|  | (Dollars in Thousands) |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 32,768 |  | $ | 1,477 |  | $ | 736,342 |  | $ | 10,155 |
Commercial real estate: other construction & land development |  |  | 28,660 |  |  | 539 |  |  | 1,119,009 |  |  | 12,181 |
Commercial real estate: farmland & commercial |  |  | 13,945 |  |  | 2,730 |  |  | 1,659,377 |  |  | 19,150 |
Commercial real estate: multifamily |  |  | 353 |  |  | — |  |  | 82,595 |  |  | 694 |
Residential: first lien |  |  | 3,656 |  |  | — |  |  | 453,075 |  |  | 4,390 |
Residential: junior lien |  |  | 1,850 |  |  | — |  |  | 379,886 |  |  | 4,448 |
Consumer |  |  | 1,326 |  |  | — |  |  | 73,188 |  |  | 1,289 |
Foreign |  |  | 447 |  |  | — |  |  | 188,527 |  |  | 1,140 |
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Total |  | $ | 83,005 |  | $ | 4,746 |  | $ | 4,691,999 |  | $ | 53,447 |
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Loans accounted on non-accrual basis, by loan class |
|  | December 31, |
--- | --- | --- | ---
|  | 2013 |  | 2012 |
|  | (Dollars in Thousands) |
Domestic |  |  |  |  |  |  |
Commercial |  | $ | 34,110 |  | $ | 31,929 |
Commercial real estate: other construction & land development |  |  | 11,726 |  |  | 26,410 |
Commercial real estate: farmland & commercial |  |  | 13,775 |  |  | 11,681 |
Commercial real estate: multifamily |  |  | 295 |  |  | 353 |
Residential: first lien |  |  | 1,266 |  |  | 1,175 |
Residential: junior lien |  |  | 1,576 |  |  | 175 |
Consumer |  |  | 75 |  |  | 45 |
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Total non-accrual loans |  | $ | 62,823 |  | $ | 71,768 |
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Impaired loans, by loan class |
|  | December 31, 2013 |
--- | --- | --- | ---
|  | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance |  | Average Recorded Investment |  | Interest Recognized |
|  | (Dollars in Thousands) |
Loans with Related Allowance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 17,178 |  | $ | 17,177 |  | $ | 12,234 |  | $ | 18,019 |  | $ | 38 |
Commercial real estate: other construction & land development |  |  | 6,818 |  |  | 6,825 |  |  | 852 |  |  | 6,058 |  |  | — |
Commercial real estate: farmland & commercial |  |  | 7,259 |  |  | 10,697 |  |  | 2,916 |  |  | 7,167 |  |  | 92 |
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Total impaired loans with related allowance |  | $ | 31,255 |  | $ | 34,699 |  | $ | 16,002 |  | $ | 31,244 |  | $ | 130 |
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|  | December 31, 2013 |
--- | --- | --- | ---
|  | Recorded Investment |  | Unpaid Principal Balance |  | Average Recorded Investment |  | Interest Recognized |
|  | (Dollars in Thousands) |
Loans with No Related Allowance |  |  |  |  |  |  |  |  |  |  |  |  |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 17,005 |  | $ | 17,023 |  | $ | 16,778 |  | $ | 2 |
Commercial real estate: other construction & land development |  |  | 7,158 |  |  | 7,187 |  |  | 18,164 |  |  | 74 |
Commercial real estate: farmland & commercial |  |  | 8,779 |  |  | 9,949 |  |  | 7,313 |  |  | — |
Commercial real estate: multifamily |  |  | 295 |  |  | 295 |  |  | 322 |  |  | — |
Residential: first lien |  |  | 6,153 |  |  | 6,258 |  |  | 4,860 |  |  | 179 |
Residential: junior lien |  |  | 3,206 |  |  | 3,226 |  |  | 2,347 |  |  | 99 |
Consumer |  |  | 1,606 |  |  | 1,612 |  |  | 1,380 |  |  | 1 |
Foreign |  |  | 436 |  |  | 436 |  |  | 452 |  |  | 19 |
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Total impaired loans with no related allowance |  | $ | 44,638 |  | $ | 45,986 |  | $ | 51,616 |  | $ | 374 |
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|  | December 31, 2012 |
--- | --- | --- | ---
|  | Recorded Investment |  | Unpaid Principal Balance |  | Related Allowance |  | Average Recorded Investment |  | Interest Recognized |
|  | (Dollars in Thousands) |
Loans with Related Allowance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 1,633 |  | $ | 1,679 |  | $ | 1,477 |  | $ | 21,126 |  | $ | 39 |
Commercial real estate: other construction & land development |  |  | 3,671 |  |  | 3,671 |  |  | 539 |  |  | 6,608 |  |  | — |
Commercial real estate: farmland & commercial |  |  | 6,678 |  |  | 9,923 |  |  | 2,730 |  |  | 7,342 |  |  | 92 |
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Total impaired loans with related allowance |  | $ | 11,982 |  | $ | 15,273 |  | $ | 4,746 |  | $ | 35,076 |  | $ | 131 |
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|  | December 31, 2012 |
--- | --- | --- | ---
|  | Recorded Investment |  | Unpaid Principal Balance |  | Average Recorded Investment |  | Interest Recognized |
|  | (Dollars in Thousands) |
Loans with No Related Allowance |  |  |  |  |  |  |  |  |  |  |  |  |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 31,135 |  | $ | 31,170 |  | $ | 2,996 |  | $ | 4 |
Commercial real estate: other construction & land development |  |  | 24,989 |  |  | 25,160 |  |  | 39,449 |  |  | 141 |
Commercial real estate: farmland & commercial |  |  | 7,267 |  |  | 9,340 |  |  | 16,536 |  |  | 8 |
Commercial real estate: multifamily |  |  | 353 |  |  | 353 |  |  | 381 |  |  | — |
Residential: first lien |  |  | 3,656 |  |  | 3,984 |  |  | 2,876 |  |  | 60 |
Residential: junior lien |  |  | 1,850 |  |  | 1,944 |  |  | 1,939 |  |  | 104 |
Consumer |  |  | 1,326 |  |  | 1,330 |  |  | 1,193 |  |  | — |
Foreign |  |  | 447 |  |  | 447 |  |  | 166 |  |  | 6 |
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Total impaired loans with no related allowance |  | $ | 71,023 |  | $ | 73,728 |  | $ | 65,536 |  | $ | 323 |
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Information regarding the aging of past due loans, by loan class |
|  | December 31, 2013 |
--- | --- | --- | ---
|  | 30 - 59 Days |  | 60 - 89 Days |  | 90 Days or Greater |  | 90 Days or greater & still accruing |  | Total Past due |  | Current |  | Total Portfolio |
|  | (Dollars in Thousands) |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 4,240 |  | $ | 538 |  | $ | 36,066 |  | $ | 2,051 |  | $ | 40,844 |  | $ | 1,001,798 |  | $ | 1,042,642 |
Commercial real estate: other construction & land development |  |  | 1,042 |  |  | — |  |  | 9,942 |  |  | 62 |  |  | 10,984 |  |  | 1,197,524 |  |  | 1,208,508 |
Commercial real estate: farmland & commercial |  |  | 6,216 |  |  | 520 |  |  | 6,990 |  |  | 417 |  |  | 13,726 |  |  | 1,736,313 |  |  | 1,750,039 |
Commercial real estate: multifamily |  |  | 39 |  |  | 142 |  |  | 295 |  |  | — |  |  | 476 |  |  | 101,622 |  |  | 102,098 |
Residential: first lien |  |  | 4,758 |  |  | 3,046 |  |  | 4,541 |  |  | 3,518 |  |  | 12,345 |  |  | 426,117 |  |  | 438,462 |
Residential: junior lien |  |  | 606 |  |  | 198 |  |  | 1,900 |  |  | 368 |  |  | 2,704 |  |  | 406,526 |  |  | 409,230 |
Consumer |  |  | 1,523 |  |  | 469 |  |  | 803 |  |  | 781 |  |  | 2,795 |  |  | 63,619 |  |  | 66,414 |
Foreign |  |  | 1,467 |  |  | 417 |  |  | — |  |  | — |  |  | 1,884 |  |  | 179,958 |  |  | 181,842 |
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Total past due loans |  | $ | 19,891 |  | $ | 5,330 |  | $ | 60,537 |  | $ | 7,197 |  | $ | 85,758 |  | $ | 5,113,477 |  | $ | 5,199,235 |
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|  | December 31, 2012 |
--- | --- | --- | ---
|  | 30 - 59 Days |  | 60 - 89 Days |  | 90 Days or Greater |  | 90 Days or greater & still accruing |  | Total Past due |  | Current |  | Total Portfolio |
|  | (Dollars in Thousands) |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 4,393 |  | $ | 471 |  | $ | 3,386 |  | $ | 2,689 |  | $ | 8,250 |  | $ | 760,860 |  | $ | 769,110 |
Commercial real estate: other construction & land development |  |  | 1,107 |  |  | 2,300 |  |  | 24,225 |  |  | 497 |  |  | 27,632 |  |  | 1,120,037 |  |  | 1,147,669 |
Commercial real estate: farmland & commercial |  |  | 3,127 |  |  | 21,272 |  |  | 2,310 |  |  | 929 |  |  | 26,709 |  |  | 1,646,613 |  |  | 1,673,322 |
Commercial real estate: multifamily |  |  | 685 |  |  | — |  |  | 353 |  |  | — |  |  | 1,038 |  |  | 81,910 |  |  | 82,948 |
Residential: first lien |  |  | 4,305 |  |  | 2,510 |  |  | 10,645 |  |  | 9,657 |  |  | 17,460 |  |  | 439,271 |  |  | 456,731 |
Residential: junior lien |  |  | 2,035 |  |  | 410 |  |  | 259 |  |  | 115 |  |  | 2,704 |  |  | 379,032 |  |  | 381,736 |
Consumer |  |  | 1,598 |  |  | 404 |  |  | 915 |  |  | 882 |  |  | 2,917 |  |  | 71,597 |  |  | 74,514 |
Foreign |  |  | 2,257 |  |  | 1,005 |  |  | 264 |  |  | 264 |  |  | 3,526 |  |  | 185,448 |  |  | 188,974 |
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Total past due loans |  | $ | 19,507 |  | $ | 28,372 |  | $ | 42,357 |  | $ | 15,033 |  | $ | 90,236 |  | $ | 4,684,768 |  | $ | 4,775,004 |
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Summary of the loan portfolio by credit quality indicator, by loan class |
|  |  |  | December 31, 2013 |
--- | --- | --- | --- | --- | ---
|  | Pass |  | Special Review |  | Watch List—Pass |  | Watch List— Substandard |  | Watch List— Impaired |
|  |  |  | (Dollars in Thousands) |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 955,522 |  | $ | 2,270 |  | $ | 4,389 |  | $ | 46,278 |  | $ | 34,183 |
Commercial real estate: other construction & land development |  |  | 1,167,295 |  |  | 14,247 |  |  | 9,318 |  |  | 3,672 |  |  | 13,976 |
Commercial real estate: farmland & commercial |  |  | 1,635,179 |  |  | 56,438 |  |  | 21,912 |  |  | 20,472 |  |  | 16,038 |
Commercial real estate: multifamily |  |  | 100,948 |  |  | — |  |  | — |  |  | 855 |  |  | 295 |
Residential: first lien |  |  | 432,067 |  |  | 122 |  |  | — |  |  | 120 |  |  | 6,153 |
Residential: junior lien |  |  | 405,731 |  |  | — |  |  | — |  |  | 293 |  |  | 3,206 |
Consumer |  |  | 64,808 |  |  | — |  |  | — |  |  | — |  |  | 1,606 |
Foreign |  |  | 180,837 |  |  | — |  |  | — |  |  | 569 |  |  | 436 |
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Total |  | $ | 4,942,387 |  | $ | 73,077 |  | $ | 35,619 |  | $ | 72,259 |  | $ | 75,893 |
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|  |  |  | December 31, 2012 |
--- | --- | --- | --- | --- | ---
|  | Pass |  | Special Review |  | Watch List—Pass |  | Watch List— Substandard |  | Watch List— Impaired |
|  |  |  | (Dollars in Thousands) |
Domestic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 675,263 |  | $ | 4,278 |  | $ | 16,535 |  | $ | 40,266 |  | $ | 32,768 |
Commercial real estate: other construction & land development |  |  | 1,038,749 |  |  | 55,079 |  |  | 2,614 |  |  | 22,567 |  |  | 28,660 |
Commercial real estate: farmland & commercial |  |  | 1,486,572 |  |  | 109,144 |  |  | 46,316 |  |  | 17,345 |  |  | 13,945 |
Commercial real estate: multifamily |  |  | 82,542 |  |  | — |  |  | 53 |  |  | — |  |  | 353 |
Residential: first lien |  |  | 446,218 |  |  | 519 |  |  | — |  |  | 6,338 |  |  | 3,656 |
Residential: junior lien |  |  | 378,000 |  |  | 77 |  |  | 309 |  |  | 1,500 |  |  | 1,850 |
Consumer |  |  | 73,188 |  |  | — |  |  | — |  |  | — |  |  | 1,326 |
Foreign |  |  | 188,499 |  |  | — |  |  | 28 |  |  | — |  |  | 447 |
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Total |  | $ | 4,369,031 |  | $ | 169,097 |  | $ | 65,855 |  | $ | 88,016 |  | $ | 83,005 |
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- Details
Name: | iboc_AllowanceForProbableLoanLossesDisclosureAbstract
Namespace Prefix: | iboc_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + 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=28368275&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of financing receivables by credit quality indicator. The credit quality indicator is a statistic about the credit quality of financing receivables. Examples include, but not limited to, consumer credit risk scores, credit-rating-agency ratings, an entity's internal credit risk grades, loan-to-value ratios, collateral, collection experience and other internal metrics. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953659-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 55 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=32702940&loc=SL6953803-111525 + Details
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- Definition Tabular disclosure of impaired financing receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 + Details
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- Definition Tabular disclosure of financing receivables that are past due but not impaired, financing receivables that are 90 days past due and still accruing, and financing receivables on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953401-111524 + Details
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- Definition Tabular disclosure of the activity in the total allowance for credit losses related to financing receivables (such as loans or lease receivables) for entities that have an unclassified balance sheet, including the balance in the allowance at the beginning and end of each period, additions charged to operations, direct write-downs charged against the allowance, and recoveries of amounts previously charged off. + 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 (c) -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of nonaccrual and past due financing receivables (such as loans and trade receivables), including: (a) the recorded investment in loans and trade receivables, if applicable, on nonaccrual status as of each balance sheet date (b) the recorded investment in loans and trade receivables, if applicable, past due 90 days or more 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 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 + Details
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