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International Bancshares Corporation (Parent Company Only) Financial Information Statements of Cash Flows (Details) (USD $) | 12 Months Ended | 48 Months Ended
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012
Operating activities: |  |  |  |
Net income | $ 107,835,000 | $ 127,149,000 | $ 130,023,000 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Accretion of junior subordinated interest deferrable debentures |  | 9,000 | 35,000 |
Investment securities transactions, net | (38,446,000) | (17,285,000) | (33,209,000) |
Accretion of investment securities discounts | (3,195,000) | (2,081,000) | (1,693,000) |
Stock compensation expense | 474,000 | 387,000 | 534,000 |
Increase (decrease) in other liabilities | 7,106,000 | (4,966,000) | 1,652,000 |
Net cash provided by operating activities | 160,013,000 | 180,823,000 | 178,155,000 |
Investing activities: |  |  |  |
Principal collected on mortgage-backed securities | 1,294,197,000 | 999,419,000 | 1,085,817,000 |
Net cash (used in) provided by investing activities | (261,016,000) | 207,133,000 | (255,443,000) |
Financing activities: |  |  |  |
Redemption of Series A preferred shares | (216,000,000) |  |  |
Proceeds from stock transactions | 51,000 | 113,000 | 484,000 |
Payments of cash dividends - common | (26,894,000) | (25,648,000) | (24,444,000) |
Payments of cash dividends - preferred | (10,260,000) | (10,800,000) | (10,800,000) | (41,520,139)
Purchase of treasury stock | (1,716,000) | (6,435,000) | (6,949,000) |
Net cash provided by (used in) financing activities | 122,218,000 | (323,885,000) | 50,464,000 |
Increase (decrease) in cash and cash equivalents | 21,215,000 | 64,071,000 | (26,824,000) |
Cash and cash equivalents at beginning of year | 261,885,000 | 197,814,000 | 224,638,000 |
Cash and cash equivalents at end of year | 283,100,000 | 261,885,000 | 197,814,000 | 283,100,000
Parent Company |  |  |  |
Operating activities: |  |  |  |
Net income | 107,835,000 | 127,149,000 | 130,023,000 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
Accretion of junior subordinated interest deferrable debentures |  | 9,000 | 35,000 |
Investment securities transactions, net |  | 2,000 | 1,135,000 |
Accretion of investment securities discounts |  |  | (232,000) |
Stock compensation expense | 474,000 | 387,000 | 534,000 |
Increase (decrease) in other liabilities | 6,711,000 | (3,234,000) | 4,976,000 |
Equity in distributed (undistributed) net income of subsidiaries | 119,181,000 | (78,806,000) | (81,923,000) |
Net cash provided by operating activities | 234,201,000 | 45,507,000 | 54,548,000 |
Investing activities: |  |  |  |
Principal collected on mortgage-backed securities | 1,985,000 | 1,355,000 | 3,324,000 |
Net decrease (increase) in notes receivable | 86,000 | (245,000) | (150,000) |
Decrease (increase) in other assets and other investments | 6,418,000 | (4,193,000) | (8,311,000) |
Net cash (used in) provided by investing activities | 8,489,000 | (3,083,000) | (5,137,000) |
Financing activities: |  |  |  |
Repayment of trust preferred securities |  | 10,400,000 |  |
Redemption of Series A preferred shares | (216,000,000) |  |  |
Proceeds from stock transactions | 51,000 | 113,000 | 484,000 |
Payments of cash dividends - common | (26,894,000) | (25,648,000) | (24,444,000) |
Payments of cash dividends - preferred | (10,260,000) | (10,800,000) | (10,800,000) |
Purchase of treasury stock | (1,716,000) | (6,435,000) | (6,949,000) |
Net cash provided by (used in) financing activities | (254,819,000) | (53,170,000) | (41,709,000) |
Increase (decrease) in cash and cash equivalents | (12,129,000) | (10,746,000) | 7,702,000 |
Cash and cash equivalents at beginning of year | 13,668,000 | 24,414,000 | 16,712,000 |
Cash and cash equivalents at end of year | $ 1,539,000 | $ 13,668,000 | $ 24,414,000 | $ 1,539,000

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- Definition The cash outflow to reacquire preferred stocks issued by a business trust or other special purpose entity, mainly established by a bank holding entity, to third party investors. The trust's assets are deeply subordinated debentures of the bank holding entity. Most trust preferred securities are subject to a mandatory redemption upon the repayment of the debentures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Cash outflow in the form of ordinary dividends to common shareholders, generally out of earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 + Details
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- Definition Cash outflow in the form of ordinary dividends to preferred shareholders, generally out of earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3291-108585 + Details
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- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 16 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Chapter V -Subsection III -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3179-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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