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v2.4.1.9

International Operations (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Loans: |  |  |
Accrued interest receivable | $ 31,461,000 us-gaap_InterestReceivable | $ 30,654,000 us-gaap_InterestReceivable |
International banking services |  |  |
Loans: |  |  |
Commercial | 150,078,000 us-gaap_LoansAndLeasesReceivableForeignCommercial / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember | 142,145,000 us-gaap_LoansAndLeasesReceivableForeignCommercial / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember |
Others | 35,143,000 us-gaap_LoansAndLeasesReceivableForeignCommercialAndConsumerOther / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember | 39,697,000 us-gaap_LoansAndLeasesReceivableForeignCommercialAndConsumerOther / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember |
Total loans | 185,221,000 us-gaap_LoansAndLeasesReceivableForeignNetOfDeferredIncome / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember | 181,842,000 us-gaap_LoansAndLeasesReceivableForeignNetOfDeferredIncome / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember |
Less allowance for probable loan losses | (1,060,000)us-gaap_LoansAndLeasesReceivableForeignAllowance / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember | (1,133,000)us-gaap_LoansAndLeasesReceivableForeignAllowance / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember |
Net loans | 184,161,000 us-gaap_LoansAndLeasesReceivableNetReportedAmountForeign / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember | 180,709,000 us-gaap_LoansAndLeasesReceivableNetReportedAmountForeign / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember |
Accrued interest receivable | 702,000 us-gaap_InterestReceivable / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember | 617,000 us-gaap_InterestReceivable / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember |
Outstanding standby and commercial letters of credit | 114,672,000 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember |  |
Revenues | $ 6,034,000 us-gaap_InterestAndFeeIncomeLoansForeign / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember | $ 6,085,000 us-gaap_InterestAndFeeIncomeLoansForeign / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember | $ 7,714,000 us-gaap_InterestAndFeeIncomeLoansForeign / us-gaap_ProductOrServiceAxis = iboc_InternationalBankingServicesMember

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- Definition Interest and fee income generated by commercial and consumer loans, made by foreign branches of the reporting entity, which may include loans to foreign governments, foreign banks and other financial institutions, commercial and industrial entities, and citizens of not domiciled in the same country as the reporting entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.1) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 9 + Details
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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 8 -Article 5 + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition The allowance for foreign loan and lease losses represents the reserve to cover probable credit losses related to specifically identified foreign loans and leases, as well as probable credit losses inherent in the remainder of the foreign loan portfolio as of the balance sheet date. For banks, include currently required allocated transfer risk reserves. Include carryover of or adjustments to the allowance for foreign loan losses in connection with business combinations determined to be appropriate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 Reference 3: 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=35738203&loc=SL6953423-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section L -Subsection 1 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18832-111554 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18805-111554 + Details
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- Definition Amount before allowance of loans to entities involved in commercial enterprises, not originated within the country of domicile of the reporting entity. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)(c)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05) -URI http://asc.fasb.org/extlink&oid=6882215&loc=d3e537907-122884 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a -Article 9 + Details
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- Definition Amount before allowance of loans, not otherwise specified in the taxonomy, not originated within the country of domicile of the reporting entity. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)(c)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05) -URI http://asc.fasb.org/extlink&oid=6882215&loc=d3e537907-122884 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a -Article 9 + Details
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- Definition Reflects the net carrying amount of foreign loans and leases held in portfolio, after deducting deferred income, but before deducting the allowance for losses on foreign loans and leases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 + Details
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- Definition Amount after allowance and deduction of deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts, of loans and leases to borrowers not within the country of domicile of the reporting entity. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5066-111524 + Details
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