$IBOC
International Bancshares Corp

2021 Q2 Form 10-Q Financial Statement

#000155837021010508 Filed on August 05, 2021

View on sec.gov

Income Statement

Concept 2021 Q2 2020 Q4 2020 Q2
Revenue $97.98M $113.7M
YoY Change -13.79% -10.41%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization $6.400M $7.000M $7.200M
YoY Change -11.11% -2.78% 2.86%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense $6.671M $9.796M
YoY Change -31.9% -35.03%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income $118.1M $61.90M $52.55M
YoY Change 124.76% -5.21% -17.78%
Income Tax $26.09M $13.70M $11.04M
% Of Pretax Income 22.09% 22.13% 21.01%
Net Earnings $92.03M $48.20M $41.51M
YoY Change 121.7% -6.77% -17.02%
Net Earnings / Revenue 93.92% 36.52%
Basic Earnings Per Share $1.45 $0.66
Diluted Earnings Per Share $1.45 $760.3K $0.65
COMMON SHARES
Basic Shares Outstanding 63.36M 63.28M 63.30M
Diluted Shares Outstanding 63.52M 63.40M

Balance Sheet

Concept 2021 Q2 2020 Q4 2020 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments $6.508B $5.088B $4.306B
YoY Change 51.16% 39.61% 13.38%
Cash & Equivalents $2.327B $1.997B $1.198B
Short-Term Investments $4.181B $3.090B $3.107B
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment $463.5M $479.9M $492.0M
YoY Change -5.79% -5.27% -2.71%
Goodwill $282.5M $282.5M $282.5M
YoY Change 0.0% 0.0% 0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets $15.31B $14.03B $13.32B
YoY Change 14.91% 15.82% 8.98%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt $431.0M $428.0M $387.0M
YoY Change 11.37% 80.59% 60.58%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities $431.0M $428.0M $387.0M
YoY Change 11.37% 80.59% 60.58%
LONG-TERM LIABILITIES
Long-Term Debt $135.0M $135.0M $135.0M
YoY Change 0.0% 0.0% 0.0%
Other Long-Term Liabilities $147.0M $130.0M $189.0M
YoY Change -22.22% -23.98% 22.73%
Total Long-Term Liabilities $282.0M $265.0M $324.0M
YoY Change -12.96% -13.4% 12.11%
TOTAL LIABILITIES
Total Short-Term Liabilities $431.0M $428.0M $387.0M
Total Long-Term Liabilities $282.0M $265.0M $324.0M
Total Liabilities $13.03B $11.85B $11.18B
YoY Change 16.48% 18.58% 9.99%
SHAREHOLDERS EQUITY
Retained Earnings $2.398B $2.290B $2.233B
YoY Change 7.35% 4.05% 4.7%
Common Stock $96.33M $96.24M $96.23M
YoY Change 0.11% 0.03% 0.08%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity $2.286B $2.178B $2.142B
YoY Change
Total Liabilities & Shareholders Equity $15.31B $14.03B $13.32B
YoY Change 14.91% 15.82% 8.98%

Cashflow Statement

Concept 2021 Q2 2020 Q4 2020 Q2
OPERATING ACTIVITIES
Net Income $92.03M $48.20M $41.51M
YoY Change 121.7% -6.77% -17.02%
Depreciation, Depletion And Amortization $6.400M $7.000M $7.200M
YoY Change -11.11% -2.78% 2.86%
Cash From Operating Activities $70.50M $90.30M $79.90M
YoY Change -11.76% -10.06% 38.47%
INVESTING ACTIVITIES
Capital Expenditures -$2.700M -$500.0K -$1.800M
YoY Change 50.0% -91.38% -78.31%
Acquisitions
YoY Change
Other Investing Activities -$96.10M $225.3M -$34.50M
YoY Change 178.55% -202.41% -83.72%
Cash From Investing Activities -$98.80M $224.8M -$36.40M
YoY Change 171.43% -199.56% -83.47%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities 387.4M 432.7M 800.0M
YoY Change -51.57% 352.62% 495.24%
NET CHANGE
Cash From Operating Activities 70.50M 90.30M 79.90M
Cash From Investing Activities -98.80M 224.8M -36.40M
Cash From Financing Activities 387.4M 432.7M 800.0M
Net Change In Cash 359.1M 747.8M 843.5M
YoY Change -57.43% -2609.4% -3101.78%
FREE CASH FLOW
Cash From Operating Activities $70.50M $90.30M $79.90M
Capital Expenditures -$2.700M -$500.0K -$1.800M
Free Cash Flow $73.20M $90.80M $81.70M
YoY Change -10.4% -14.5% 23.79%

Facts In Submission

Frame Concept Type Concept / XBRL Key Value Unit
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dei Current Fiscal Year End Date
CurrentFiscalYearEndDate
--12-31
dei Document Fiscal Year Focus
DocumentFiscalYearFocus
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dei Document Fiscal Period Focus
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Q2
dei Amendment Flag
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false
dei Document Type
DocumentType
10-Q
dei Document Quarterly Report
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true
dei Document Period End Date
DocumentPeriodEndDate
2021-06-30
dei Document Transition Report
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false
dei Entity File Number
EntityFileNumber
000-09439
dei Entity Registrant Name
EntityRegistrantName
INTERNATIONAL BANCSHARES CORPORATION
dei Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
TX
dei Entity Tax Identification Number
EntityTaxIdentificationNumber
74-2157138
dei Entity Address Address Line1
EntityAddressAddressLine1
1200 San Bernardo Avenue
dei Entity Address City Or Town
EntityAddressCityOrTown
Laredo
dei Entity Address State Or Province
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TX
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EntityAddressPostalZipCode
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dei City Area Code
CityAreaCode
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dei Local Phone Number
LocalPhoneNumber
722-7611
dei Security12b Title
Security12bTitle
Common Stock, $1.00 par value
dei Trading Symbol
TradingSymbol
IBOC
dei Security Exchange Name
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CY2021Q2 us-gaap Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
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CY2020Q2 us-gaap Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
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us-gaap Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
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us-gaap Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
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CY2021Q2 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
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CY2020Q2 us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
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us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
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us-gaap Income Tax Expense Benefit
IncomeTaxExpenseBenefit
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CY2021Q2 us-gaap Net Income Loss
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CY2020Q2 us-gaap Net Income Loss
NetIncomeLoss
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us-gaap Net Income Loss
NetIncomeLoss
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us-gaap Net Income Loss
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CY2021Q2 us-gaap Weighted Average Number Of Shares Outstanding Basic
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CY2020Q2 us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
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us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
63335289
us-gaap Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
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EarningsPerShareBasic
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CY2020Q2 us-gaap Earnings Per Share Basic
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us-gaap Earnings Per Share Basic
EarningsPerShareBasic
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us-gaap Earnings Per Share Basic
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CY2021Q2 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
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CY2020Q2 us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
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us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
63469284
us-gaap Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
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CY2021Q2 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
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CY2020Q2 us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
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us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
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us-gaap Earnings Per Share Diluted
EarningsPerShareDiluted
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CY2021Q2 us-gaap Net Income Loss
NetIncomeLoss
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CY2020Q2 us-gaap Net Income Loss
NetIncomeLoss
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us-gaap Net Income Loss
NetIncomeLoss
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us-gaap Net Income Loss
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CY2021Q2 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax
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CY2020Q2 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax
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us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax
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us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax
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CY2021Q2 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
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CY2020Q2 us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
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us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
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us-gaap Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
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CY2021Q2 us-gaap Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax
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CY2020Q2 us-gaap Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax
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us-gaap Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax
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us-gaap Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax
OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax
1000
us-gaap Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax
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us-gaap Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax
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CY2021Q2 us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
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CY2020Q2 us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
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us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
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us-gaap Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent
OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
38974000
CY2021Q2 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
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CY2020Q2 us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
18476000
us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
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us-gaap Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
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CY2021Q1 us-gaap Stockholders Equity
StockholdersEquity
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CY2021Q2 us-gaap Net Income Loss
NetIncomeLoss
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CY2021Q2 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
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CY2021Q2 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
114000
CY2021Q2 iboc Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Net Of Reclassification Adjustment
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment
479000
CY2021Q2 us-gaap Stockholders Equity
StockholdersEquity
2285670000
CY2020Q1 us-gaap Stockholders Equity
StockholdersEquity
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CY2020Q2 us-gaap Net Income Loss
NetIncomeLoss
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CY2020Q2 us-gaap Treasury Stock Shares Acquired
TreasuryStockSharesAcquired
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CY2020Q2 us-gaap Treasury Stock Value Acquired Cost Method
TreasuryStockValueAcquiredCostMethod
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CY2020Q2 us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
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CY2020Q2 us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
177000
CY2020Q2 iboc Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Net Of Reclassification Adjustment
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment
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CY2020Q2 us-gaap Stockholders Equity
StockholdersEquity
2141860000
CY2020Q4 us-gaap Stockholders Equity
StockholdersEquity
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us-gaap Net Income Loss
NetIncomeLoss
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us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
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us-gaap Dividends Common Stock Cash
DividendsCommonStockCash
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us-gaap Treasury Stock Shares Acquired
TreasuryStockSharesAcquired
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us-gaap Treasury Stock Value Acquired Cost Method
TreasuryStockValueAcquiredCostMethod
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us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
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us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
273000
iboc Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Net Of Reclassification Adjustment
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment
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CY2021Q2 us-gaap Stockholders Equity
StockholdersEquity
2285670000
CY2019Q4 us-gaap Stockholders Equity
StockholdersEquity
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us-gaap Net Income Loss
NetIncomeLoss
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us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
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us-gaap Dividends Common Stock Cash
DividendsCommonStockCash
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us-gaap Treasury Stock Shares Acquired
TreasuryStockSharesAcquired
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us-gaap Treasury Stock Value Acquired Cost Method
TreasuryStockValueAcquiredCostMethod
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us-gaap Stock Issued During Period Value Stock Options Exercised
StockIssuedDuringPeriodValueStockOptionsExercised
288000
us-gaap Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
395000
iboc Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Net Of Reclassification Adjustment
OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringNetOfReclassificationAdjustment
38974000
CY2020Q2 us-gaap Stockholders Equity
StockholdersEquity
2141860000
us-gaap Profit Loss
ProfitLoss
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us-gaap Profit Loss
ProfitLoss
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us-gaap Provision For Loan Losses Expensed
ProvisionForLoanLossesExpensed
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us-gaap Provision For Loan Losses Expensed
ProvisionForLoanLossesExpensed
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us-gaap Other Real Estate Covered Valuation Adjustments
OtherRealEstateCoveredValuationAdjustments
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us-gaap Other Real Estate Covered Valuation Adjustments
OtherRealEstateCoveredValuationAdjustments
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us-gaap Depreciation Nonproduction
DepreciationNonproduction
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us-gaap Depreciation Nonproduction
DepreciationNonproduction
14299000
us-gaap Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
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us-gaap Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
155000
us-gaap Gains Losses On Sales Of Other Real Estate
GainsLossesOnSalesOfOtherRealEstate
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us-gaap Gains Losses On Sales Of Other Real Estate
GainsLossesOnSalesOfOtherRealEstate
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iboc Accretion Of Discounts Investments
AccretionOfDiscountsInvestments
279000
iboc Accretion Of Discounts Investments
AccretionOfDiscountsInvestments
241000
iboc Amortization Of Investment Securities Premiums
AmortizationOfInvestmentSecuritiesPremiums
22329000
iboc Amortization Of Investment Securities Premiums
AmortizationOfInvestmentSecuritiesPremiums
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us-gaap Debt And Equity Securities Gain Loss
DebtAndEquitySecuritiesGainLoss
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us-gaap Debt And Equity Securities Gain Loss
DebtAndEquitySecuritiesGainLoss
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us-gaap Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
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us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
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us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
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us-gaap Proceeds From Insurance Settlement Operating Activities
ProceedsFromInsuranceSettlementOperatingActivities
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us-gaap Share Based Compensation
ShareBasedCompensation
273000
us-gaap Share Based Compensation
ShareBasedCompensation
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us-gaap Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
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us-gaap Income Loss From Equity Method Investments
IncomeLossFromEquityMethodInvestments
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us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
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us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
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IncreaseDecreaseInAccruedInterestReceivableNet
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us-gaap Increase Decrease In Accrued Interest Receivable Net
IncreaseDecreaseInAccruedInterestReceivableNet
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IncreaseDecreaseInOtherOperatingAssets
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us-gaap Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
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us-gaap Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
24904000
us-gaap Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
28186000
us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
165998000
us-gaap Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
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us-gaap Proceeds From Maturities Prepayments And Calls Of Other Investments
ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments
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us-gaap Proceeds From Maturities Prepayments And Calls Of Other Investments
ProceedsFromMaturitiesPrepaymentsAndCallsOfOtherInvestments
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us-gaap Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
2865000
us-gaap Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
18920000
us-gaap Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
3630564000
us-gaap Payments To Acquire Available For Sale Securities Debt
PaymentsToAcquireAvailableForSaleSecuritiesDebt
458184000
us-gaap Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs
ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS
1009379000
us-gaap Proceeds From Maturities Prepayments And Calls Of Mortgage Backed Securities Mbs
ProceedsFromMaturitiesPrepaymentsAndCallsOfMortgageBackedSecuritiesMBS
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us-gaap Payments For Proceeds From Loans And Leases
PaymentsForProceedsFromLoansAndLeases
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us-gaap Payments For Proceeds From Loans And Leases
PaymentsForProceedsFromLoansAndLeases
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us-gaap Payments To Acquire Other Investments
PaymentsToAcquireOtherInvestments
42037000
us-gaap Payments To Acquire Other Investments
PaymentsToAcquireOtherInvestments
25329000
iboc Distributions From Other Investments
DistributionsFromOtherInvestments
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iboc Distributions From Other Investments
DistributionsFromOtherInvestments
26688000
us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
4259000
us-gaap Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
4593000
us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
1255000
us-gaap Proceeds From Sale Of Property Plant And Equipment
ProceedsFromSaleOfPropertyPlantAndEquipment
786000
us-gaap Proceeds From Sale Of Other Real Estate
ProceedsFromSaleOfOtherRealEstate
6320000
us-gaap Proceeds From Sale Of Other Real Estate
ProceedsFromSaleOfOtherRealEstate
3625000
us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
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us-gaap Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
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iboc Increase Decrease In Noninterest Bearing Demand Deposits
IncreaseDecreaseInNoninterestBearingDemandDeposits
703414000
iboc Increase Decrease In Noninterest Bearing Demand Deposits
IncreaseDecreaseInNoninterestBearingDemandDeposits
870839000
iboc Increase Decrease In Saving And Interest Bearing Demand Deposits
IncreaseDecreaseInSavingAndInterestBearingDemandDeposits
461049000
iboc Increase Decrease In Saving And Interest Bearing Demand Deposits
IncreaseDecreaseInSavingAndInterestBearingDemandDeposits
290105000
us-gaap Increase Decrease In Time Deposits
IncreaseDecreaseInTimeDeposits
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us-gaap Increase Decrease In Time Deposits
IncreaseDecreaseInTimeDeposits
48745000
us-gaap Proceeds From Payments For In Securities Sold Under Agreements To Repurchase
ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase
2382000
us-gaap Proceeds From Payments For In Securities Sold Under Agreements To Repurchase
ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase
150559000
us-gaap Increase Decrease In Loans From Other Federal Home Loan Banks
IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks
-94000
us-gaap Increase Decrease In Loans From Other Federal Home Loan Banks
IncreaseDecreaseInLoansFromOtherFederalHomeLoanBanks
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us-gaap Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
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CY2021Q2 iboc Impaired Financing Receivable Recorded Investment Fair Value Disclosure
ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure
1267000
us-gaap Proceeds From Issuance Or Sale Of Equity
ProceedsFromIssuanceOrSaleOfEquity
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us-gaap Proceeds From Issuance Or Sale Of Equity
ProceedsFromIssuanceOrSaleOfEquity
288000
us-gaap Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
34813000
us-gaap Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
35128000
us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
1124332000
us-gaap Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
1086579000
us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
329642000
us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
941386000
CY2020Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
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CY2019Q4 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
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CY2021Q2 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
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CY2020Q2 us-gaap Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
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us-gaap Interest Paid Net
InterestPaidNet
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us-gaap Interest Paid Net
InterestPaidNet
23555000
us-gaap Income Taxes Paid Net
IncomeTaxesPaidNet
16130000
us-gaap Income Taxes Paid Net
IncomeTaxesPaidNet
370000
us-gaap Transfer To Other Real Estate
TransferToOtherRealEstate
16587000
us-gaap Transfer To Other Real Estate
TransferToOtherRealEstate
2234000
iboc Transfer From Bank Premise And Equipment To Other Assets
TransferFromBankPremiseAndEquipmentToOtherAssets
4260000
us-gaap Number Of Operating Segments
NumberOfOperatingSegments
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iboc Number Of Active Operating Subsidiaries
NumberOfActiveOperatingSubsidiaries
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CY2021Q2 iboc Impaired Commercial Collateral Financing Receivable Appraisals To Determine Fair Value
ImpairedCommercialCollateralFinancingReceivableAppraisalsToDetermineFairValue
1082000
CY2021Q2 iboc Impaired Collateral Dependent Commercial Loans With Internal Evaluation Completed Within Last Twelve Months
ImpairedCollateralDependentCommercialLoansWithInternalEvaluationCompletedWithinLastTwelveMonths
0
CY2020Q4 iboc Impaired Financing Receivable Recorded Investment Fair Value Disclosure
ImpairedFinancingReceivableRecordedInvestmentFairValueDisclosure
18361000
CY2020Q4 iboc Impaired Commercial Collateral Financing Receivable Appraisals To Determine Fair Value
ImpairedCommercialCollateralFinancingReceivableAppraisalsToDetermineFairValue
16587000
CY2020Q4 iboc Impaired Collateral Dependent Commercial Loans With Internal Evaluation Completed Within Last Twelve Months
ImpairedCollateralDependentCommercialLoansWithInternalEvaluationCompletedWithinLastTwelveMonths
1283000
CY2021Q2 iboc Allowance For Loan And Lease Losses Period Increase Decrease Loans Transferred To Other Real Estate Owned
AllowanceForLoanAndLeaseLossesPeriodIncreaseDecreaseLoansTransferredToOtherRealEstateOwned
0
iboc Allowance For Loan And Lease Losses Period Increase Decrease Loans Transferred To Other Real Estate Owned
AllowanceForLoanAndLeaseLossesPeriodIncreaseDecreaseLoansTransferredToOtherRealEstateOwned
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CY2020 iboc Allowance For Loan And Lease Losses Period Increase Decrease Loans Transferred To Other Real Estate Owned
AllowanceForLoanAndLeaseLossesPeriodIncreaseDecreaseLoansTransferredToOtherRealEstateOwned
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CY2021Q2 iboc Allowance For Loan Lease Losses Write Offs Prior To Foreclosure
AllowanceForLoanLeaseLossesWriteOffsPriorToForeclosure
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iboc Allowance For Loan Lease Losses Write Offs Prior To Foreclosure
AllowanceForLoanLeaseLossesWriteOffsPriorToForeclosure
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CY2020 iboc Allowance For Loan Lease Losses Write Offs Prior To Foreclosure
AllowanceForLoanLeaseLossesWriteOffsPriorToForeclosure
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CY2021Q2 us-gaap Notes Receivable Gross
NotesReceivableGross
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CY2020Q4 us-gaap Notes Receivable Gross
NotesReceivableGross
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CY2021Q1 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
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CY2021Q2 us-gaap Financing Receivable Allowance For Credit Losses Write Offs
FinancingReceivableAllowanceForCreditLossesWriteOffs
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CY2021Q2 us-gaap Financing Receivable Allowance For Credit Losses Recovery
FinancingReceivableAllowanceForCreditLossesRecovery
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CY2021Q2 us-gaap Financing Receivable Allowance For Credit Loss Writeoff After Recovery
FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery
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CY2021Q2 us-gaap Provision For Loan Losses Expensed
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CY2021Q2 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
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CY2020Q1 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
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CY2020Q2 us-gaap Financing Receivable Allowance For Credit Losses Write Offs
FinancingReceivableAllowanceForCreditLossesWriteOffs
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CY2020Q2 us-gaap Financing Receivable Allowance For Credit Losses Recovery
FinancingReceivableAllowanceForCreditLossesRecovery
634000
CY2020Q2 us-gaap Financing Receivable Allowance For Credit Loss Writeoff After Recovery
FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery
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CY2020Q2 us-gaap Provision For Loan Losses Expensed
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CY2020Q2 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
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CY2020Q4 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
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us-gaap Financing Receivable Allowance For Credit Losses Write Offs
FinancingReceivableAllowanceForCreditLossesWriteOffs
4201000
us-gaap Financing Receivable Allowance For Credit Losses Recovery
FinancingReceivableAllowanceForCreditLossesRecovery
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us-gaap Financing Receivable Allowance For Credit Loss Writeoff After Recovery
FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery
3114000
us-gaap Provision For Loan Losses Expensed
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CY2021Q2 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
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CY2019Q4 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
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us-gaap Financing Receivable Allowance For Credit Losses Write Offs
FinancingReceivableAllowanceForCreditLossesWriteOffs
5322000
us-gaap Financing Receivable Allowance For Credit Losses Recovery
FinancingReceivableAllowanceForCreditLossesRecovery
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us-gaap Financing Receivable Allowance For Credit Loss Writeoff After Recovery
FinancingReceivableAllowanceForCreditLossWriteoffAfterRecovery
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us-gaap Provision For Loan Losses Expensed
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27825000
CY2020Q2 us-gaap Financing Receivable Allowance For Credit Losses
FinancingReceivableAllowanceForCreditLosses
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CY2021Q2 us-gaap Financing Receivable Individually Evaluated For Impairment
FinancingReceivableIndividuallyEvaluatedForImpairment
1975000
CY2021Q2 us-gaap Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1
FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
308000
CY2021Q2 us-gaap Financing Receivable Collectively Evaluated For Impairment
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CY2020Q4 us-gaap Financing Receivable Individually Evaluated For Impairment
FinancingReceivableIndividuallyEvaluatedForImpairment
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CY2020Q4 us-gaap Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1
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CY2020Q4 us-gaap Financing Receivable Collectively Evaluated For Impairment
FinancingReceivableCollectivelyEvaluatedForImpairment
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CY2020Q4 us-gaap Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment
FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
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CY2021Q2 us-gaap Financing Receivable Recorded Investment Past Due
FinancingReceivableRecordedInvestmentPastDue
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CY2021Q2 us-gaap Financing Receivable Recorded Investment Current
FinancingReceivableRecordedInvestmentCurrent
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FinancingReceivableRecordedInvestmentNonaccrualStatus
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FinancingReceivableRecordedInvestmentNonaccrualStatus
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CY2021Q2 us-gaap Financing Receivable Modifications Recorded Investment
FinancingReceivableModificationsRecordedInvestment
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FinancingReceivableModificationsRecordedInvestment
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CY2021Q3 iboc Financing Receivable With Payment Deferrals
FinancingReceivableWithPaymentDeferrals
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FinancingReceivableWithPaymentDeferrals
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CY2021Q2 us-gaap Financing Receivable Threshold Period Past Due Writeoff
FinancingReceivableThresholdPeriodPastDueWriteoff
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CY2021Q2 us-gaap Financing Receivable Recorded Investment90 Days Past Due And Still Accruing
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CY2021Q2 us-gaap Financing Receivable Originated In Current Fiscal Year
FinancingReceivableOriginatedInCurrentFiscalYear
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CY2021Q2 us-gaap Financing Receivable Originated In Fiscal Year Before Latest Fiscal Year
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2481478000
CY2021Q2 us-gaap Financing Receivable Originated Two Years Before Latest Fiscal Year
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CY2021Q2 us-gaap Financing Receivable Originated Three Years Before Latest Fiscal Year
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CY2021Q2 us-gaap Financing Receivable Originated Four Years Before Latest Fiscal Year
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FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
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FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
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CY2020Q4 us-gaap Financing Receivable Originated Three Years Before Latest Fiscal Year
FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
1087031000
CY2020Q4 us-gaap Financing Receivable Originated Four Years Before Latest Fiscal Year
FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
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CY2020Q4 us-gaap Financing Receivable Originated Five Or More Years Before Latest Fiscal Year
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327336000
CY2020Q4 iboc Financing Receivable Originated More Than Six Years Before Current Fiscal Year
FinancingReceivableOriginatedMoreThanSixYearsBeforeCurrentFiscalYear
341273000
us-gaap Debt Securities Available For Sale Realized Gain
DebtSecuritiesAvailableForSaleRealizedGain
0
CY2020Q2 us-gaap Debt Securities Available For Sale Realized Loss
DebtSecuritiesAvailableForSaleRealizedLoss
0
CY2020Q4 us-gaap Notes Receivable Gross
NotesReceivableGross
7541754000
CY2021Q2 us-gaap Heldtomaturity Securities Debt Maturities Rolling Year Two Through Five Amortized Cost
HeldtomaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCost
1325000
CY2021Q2 us-gaap Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment
HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment
3400000
CY2021Q2 us-gaap Held To Maturity Securities Fair Value
HeldToMaturitySecuritiesFairValue
3400000
CY2021Q2 us-gaap Held To Maturity Securities
HeldToMaturitySecurities
3400000
CY2021Q2 iboc Equity Securities And Available For Sale Debt Securities Amortized Cost Basis
EquitySecuritiesAndAvailableForSaleDebtSecuritiesAmortizedCostBasis
4148673000
CY2021Q2 iboc Equity Securities And Available For Sale Debt Securities Gross Unrealized Gains
EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedGains
29901000
CY2021Q2 iboc Equity Securities And Available For Sale Debt Securities Gross Unrealized Losses
EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedLosses
6693000
CY2020Q4 us-gaap Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment
HeldToMaturitySecuritiesAmortizedCostBeforeOtherThanTemporaryImpairment
3400000
CY2020Q4 us-gaap Held To Maturity Securities Fair Value
HeldToMaturitySecuritiesFairValue
3400000
CY2020Q4 us-gaap Held To Maturity Securities
HeldToMaturitySecurities
3400000
CY2020Q4 iboc Equity Securities And Available For Sale Debt Securities Amortized Cost Basis
EquitySecuritiesAndAvailableForSaleDebtSecuritiesAmortizedCostBasis
3054289000
CY2020Q4 iboc Equity Securities And Available For Sale Debt Securities Gross Unrealized Gains
EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedGains
35832000
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EquitySecuritiesAndAvailableForSaleDebtSecuritiesGrossUnrealizedLosses
9353000
CY2021Q2 us-gaap Heldtomaturity Securities Debt Maturities Next Rolling Twelve Months Amortized Cost
HeldtomaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCost
2075000
CY2021Q2 us-gaap Held To Maturity Securities Debt Maturities Next Rolling Twelve Months Fair Value
HeldToMaturitySecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue
2075000
CY2021Q2 us-gaap Held To Maturity Securities Debt Maturities Rolling Year Two Through Five Fair Value
HeldToMaturitySecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue
1325000
CY2021Q2 us-gaap Available For Sale Securities Debt Maturities Rolling After Year Ten Amortized Cost Basis
AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis
44684000
CY2021Q2 us-gaap Available For Sale Securities Debt Maturities Rolling After Year Ten Fair Value
AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue
48245000
CY2021Q2 us-gaap Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost
AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost
4103989000
CY2021Q2 us-gaap Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value
AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue
4123636000
CY2021Q2 us-gaap Held To Maturity Securities
HeldToMaturitySecurities
3400000
CY2021Q2 us-gaap Held To Maturity Securities Fair Value
HeldToMaturitySecuritiesFairValue
3400000
CY2021Q2 us-gaap Available For Sale Debt Securities Amortized Cost Basis
AvailableForSaleDebtSecuritiesAmortizedCostBasis
4148673000
CY2021Q2 us-gaap Available For Sale Securities Debt Securities
AvailableForSaleSecuritiesDebtSecurities
4171881000
CY2021Q2 us-gaap Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
355000
us-gaap Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
2865000
CY2021Q2 us-gaap Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale
ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale
0
us-gaap Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale
ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale
0
CY2021Q2 us-gaap Debt Securities Available For Sale Realized Gain
DebtSecuritiesAvailableForSaleRealizedGain
0
us-gaap Debt Securities Available For Sale Realized Gain
DebtSecuritiesAvailableForSaleRealizedGain
0
CY2021Q2 us-gaap Debt Securities Available For Sale Realized Loss
DebtSecuritiesAvailableForSaleRealizedLoss
0
us-gaap Debt Securities Available For Sale Realized Loss
DebtSecuritiesAvailableForSaleRealizedLoss
-4000
CY2020Q2 us-gaap Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
0
us-gaap Proceeds From Sale Of Available For Sale Securities Debt
ProceedsFromSaleOfAvailableForSaleSecuritiesDebt
18920000
CY2020Q2 us-gaap Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale
ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale
0
us-gaap Proceeds From Sale Of Mortgage Backed Securities Mbs Categorized As Available For Sale
ProceedsFromSaleOfMortgageBackedSecuritiesMBSCategorizedAsAvailableForSale
0
CY2020Q2 us-gaap Debt Securities Available For Sale Realized Gain
DebtSecuritiesAvailableForSaleRealizedGain
0
us-gaap Debt Securities Available For Sale Realized Loss
DebtSecuritiesAvailableForSaleRealizedLoss
-5000
CY2021Q2 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
1672076000
CY2021Q2 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
6661000
CY2021Q2 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
12811000
CY2021Q2 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
32000
CY2021Q2 us-gaap Debt Securities Available For Sale Unrealized Loss Position
DebtSecuritiesAvailableForSaleUnrealizedLossPosition
1684887000
CY2021Q2 us-gaap Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss
DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
6693000
CY2020Q4 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
1462232000
CY2020Q4 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
9339000
CY2020Q4 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
757000
CY2020Q4 us-gaap Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss
DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
14000
CY2020Q4 us-gaap Debt Securities Available For Sale Unrealized Loss Position
DebtSecuritiesAvailableForSaleUnrealizedLossPosition
1462989000
CY2020Q4 us-gaap Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss
DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
9353000
CY2021Q2 us-gaap Equity Securities Fv Ni
EquitySecuritiesFvNi
6136000
CY2020Q4 us-gaap Equity Securities Fv Ni
EquitySecuritiesFvNi
6202000
CY2021Q2 us-gaap Equity Securities Fv Ni Gain Loss
EquitySecuritiesFvNiGainLoss
11000
CY2021Q2 us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
11000
us-gaap Equity Securities Fv Ni Gain Loss
EquitySecuritiesFvNiGainLoss
-65000
us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
-65000
CY2020Q2 us-gaap Equity Securities Fv Ni Gain Loss
EquitySecuritiesFvNiGainLoss
69000
CY2020Q2 us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
69000
us-gaap Equity Securities Fv Ni Gain Loss
EquitySecuritiesFvNiGainLoss
99000
us-gaap Equity Securities Fv Ni Unrealized Gain Loss
EquitySecuritiesFvNiUnrealizedGainLoss
99000
CY2021Q2 us-gaap Advances From Federal Home Loan Banks
AdvancesFromFederalHomeLoanBanks
436233000
CY2021Q2 iboc Percentage Of Advances From Federal Home Loan Banks Increase Decrease
PercentageOfAdvancesFromFederalHomeLoanBanksIncreaseDecrease
0
CY2020Q4 us-gaap Advances From Federal Home Loan Banks
AdvancesFromFederalHomeLoanBanks
436327000
iboc Number Of Statutory Business Trusts Issuing Preferred Securities
NumberOfStatutoryBusinessTrustsIssuingPreferredSecurities
5
iboc Number Of Statutory Business Trusts Issuing Preferred Securities
NumberOfStatutoryBusinessTrustsIssuingPreferredSecurities
5
CY2021Q2 us-gaap Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust
JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust
134642000
CY2020Q4 us-gaap Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust
JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust
134642000
iboc Maximum Number Of Consecutive Quarterly Periods Available For Deferral Of Payment Of Interest
MaximumNumberOfConsecutiveQuarterlyPeriodsAvailableForDeferralOfPaymentOfInterest
20
iboc Maximum Percentage Of Capital Securities Issued By Trust Qualifying As Tier One Capital
MaximumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital
0.25
iboc Minimum Percentage Of Capital Securities Issued By Trust Qualifying As Tier Two Capital
MinimumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierTwoCapital
0.25
CY2021Q2 iboc Capital Securities Issued By Trust Qualifying As Tier One Capital
CapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital
134642000
CY2020Q4 iboc Capital Securities Issued By Trust Qualifying As Tier One Capital
CapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital
134642000
CY2021Q2 us-gaap Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust
JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust
134642000
CY2021Q1 us-gaap Common Stock Dividends Per Share Cash Paid
CommonStockDividendsPerShareCashPaid
0.55
CY2020Q2 us-gaap Common Stock Dividends Per Share Cash Paid
CommonStockDividendsPerShareCashPaid
0.55
CY2009Q2 us-gaap Stock Repurchase Program Authorized Amount1
StockRepurchaseProgramAuthorizedAmount1
40000000
CY2009Q2 us-gaap Stock Repurchase Program Period In Force1
StockRepurchaseProgramPeriodInForce1
P12M
CY2021Q1 us-gaap Stock Repurchase Program Authorized Amount1
StockRepurchaseProgramAuthorizedAmount1
50000000
CY2021Q1 us-gaap Stock Repurchase Program Period In Force1
StockRepurchaseProgramPeriodInForce1
P12M
us-gaap Stock Repurchased During Period Shares
StockRepurchasedDuringPeriodShares
12268401
us-gaap Stock Repurchased During Period Value
StockRepurchasedDuringPeriodValue
357102000
CY2021Q2 us-gaap Common Equity Tier One Capital Ratio
CommonEquityTierOneCapitalRatio
19.53
CY2020Q4 us-gaap Common Equity Tier One Capital Ratio
CommonEquityTierOneCapitalRatio
19.05
CY2021Q2 us-gaap Tier One Leverage Capital To Average Assets
TierOneLeverageCapitalToAverageAssets
14.15
CY2020Q4 us-gaap Tier One Leverage Capital To Average Assets
TierOneLeverageCapitalToAverageAssets
14.92
CY2021Q2 us-gaap Tier One Risk Based Capital To Risk Weighted Assets
TierOneRiskBasedCapitalToRiskWeightedAssets
20.66
CY2020Q4 us-gaap Tier One Risk Based Capital To Risk Weighted Assets
TierOneRiskBasedCapitalToRiskWeightedAssets
20.25
CY2021Q2 us-gaap Capital To Risk Weighted Assets
CapitalToRiskWeightedAssets
21.75
CY2020Q4 us-gaap Capital To Risk Weighted Assets
CapitalToRiskWeightedAssets
21.40
iboc Maximum Percentage Of Capital Securities Issued By Trust Qualifying As Tier One Capital
MaximumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierOneCapital
0.25
iboc Minimum Percentage Of Capital Securities Issued By Trust Qualifying As Tier Two Capital
MinimumPercentageOfCapitalSecuritiesIssuedByTrustQualifyingAsTierTwoCapital
0.25
CY2021Q2 us-gaap Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust
JuniorSubordinatedDebentureOwedToUnconsolidatedSubsidiaryTrust
134642000

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