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Investment Securities (Tables) | 9 Months Ended
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Sep. 30, 2012
Investments, Debt and Equity Securities [Abstract] |
Schedule Of Investment Securities | Investment securities at December 31, 2011, were as follows:
Securities Available-for-Sale (In thousands) |  | Amortized cost |  | Gross unrealized holding gains |  | Gross unrealized holding losses |  | Estimated fair value
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | 370,043 |  |  | $ | 1,614 |  |  | $ | — |  |  | $ | 371,657 |
Obligations of states and political subdivisions |  | 2,616 |  |  | 44 |  |  | — |  |  | 2,660 |
U.S. Government sponsored entities asset-backed securities |  | 427,300 |  |  | 16,995 |  |  | — |  |  | 444,295 |
Other equity securities |  | 1,188 |  |  | 877 |  |  | 32 |  |  | 2,033 |
Total |  | $ | 801,147 |  |  | $ | 19,530 |  |  | $ | 32 |  |  | $ | 820,645 |
Securities Held-to-Maturity (In thousands) |  | Amortized cost |  | Gross unrecognized holding gains |  | Gross unrecognized holding losses |  | Estimated fair value
Obligations of states and political subdivisions |  | $ | 1,992 |  |  | $ | 5 |  |  | $ | — |  |  | $ | 1,997 |
U.S. Government sponsored entities asset-backed securities |  | 818,232 |  |  | 14,377 |  |  | 32 |  |  | 832,577 |
Total |  | $ | 820,224 |  |  | $ | 14,382 |  |  | $ | 32 |  |  | $ | 834,574 |
Investment securities at September 30, 2012, were as follows:
Securities Available-for-Sale (In thousands) |  | Amortized Cost |  | Gross Unrealized Holding Gains |  | Gross Unrealized Holding Losses |  | Estimated Fair Value
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | 695,633 |  |  | $ | 2,837 |  |  | $ | — |  |  | $ | 698,470 |
Obligations of states and political subdivisions |  | 1,290 |  |  | 23 |  |  | — |  |  | 1,313 |
U.S. Government sponsored entities asset-backed securities |  | 315,057 |  |  | 17,791 |  |  | — |  |  | 332,848 |
Other equity securities |  | 1,134 |  |  | 1,108 |  |  | 3 |  |  | 2,239 |
Total |  | $ | 1,013,114 |  |  | $ | 21,759 |  |  | $ | 3 |  |  | $ | 1,034,870 |
Securities Held-to-Maturity (In thousands) |  | Amortized Cost |  | Gross Unrecognized Holding Gains |  | Gross Unrecognized Holding Losses |  | Estimated Fair Value
Obligations of states and political subdivisions |  | $ | 570 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 571 |
U.S. Government sponsored entities asset-backed securities |  | 552,034 |  |  | 13,039 |  |  | 45 |  |  | 565,028 |
Total |  | $ | 552,604 |  |  | $ | 13,040 |  |  | $ | 45 |  |  | $ | 565,599 |
Schedule Of Unrealized Loss On Securities | Securities with unrealized losses at September 30, 2012, were as follows:
|  | Less than 12 months |  | 12 months or longer |  | Total
(In thousands) |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses
Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government agencies |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Other equity securities |  | $ | 46 |  |  | $ | 3 |  |  | $ | — |  |  | $ | — |  |  | $ | 46 |  |  | $ | 3 |
Securities Held-to-Maturity |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies' asset-backed securities |  | $ | 10,429 |  |  | $ | 45 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,429 |  |  | $ | 45 |
Total |  | $ | 10,475 |  |  | $ | 48 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,475 |  |  | $ | 48 |
Securities with unrealized losses at December 31, 2011, were as follows:
|  | Less than 12 months |  | 12 months or longer |  | Total
(In thousands) |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses |  | Fair value |  | Unrealized losses
Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Other equity securities |  | $ | — |  |  | $ | — |  |  | $ | 80 |  |  | $ | 32 |  |  | $ | 80 |  |  | $ | 32 |
Securities Held-to-Maturity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities asset-backed securities |  | $ | — |  |  | $ | — |  |  | $ | 38,775 |  |  | $ | 32 |  |  | $ | 38,775 |  |  | $ | 32 |
Total |  | $ | — |  |  | $ | — |  |  | $ | 38,855 |  |  | $ | 64 |  |  | $ | 38,855 |  |  | $ | 64 |
Amortized Cost And Estimated Fair Value Of Investments In Debt Securities By Contractual Maturity | The amortized cost and estimated fair value of investments in debt securities at September 30, 2012, are shown in the following table by contractual maturity or the expected call date, except for asset-backed securities, which are shown as a single total, due to the unpredictability of the timing in principal repayments.
Securities Available-for-Sale (In thousands) |  | Amortized cost |  | Fair value
U.S. Treasury and sponsored entities notes: |  |  |  |  |  |
Due within one year |  | $ | 695,633 |  |  | $ | 698,470 |
Due one through five years |  | — |  |  | — |
Due five through ten years |  | — |  |  | — |
Total |  | $ | 695,633 |  |  | $ | 698,470 |
Obligations of states and political subdivisions: |  |  |  |  |  |
Due within one year |  | $ | 1,068 |  |  | $ | 1,081 |
Due one through five years |  | 222 |  |  | 232 |
|  | $ | 1,290 |  |  | $ | 1,313 |
U.S. Government sponsored entities asset-backed securities: |  |  |  |  |  |
Total |  | $ | 315,057 |  |  | $ | 332,848 |
Securities Held-to-Maturity (In thousands) |  | Amortized cost |  | Fair value
Obligations of state and political subdivisions: |  |  |  |  |  |
Due within one year |  | $ | 570 |  |  | $ | 571 |
Due one through five years |  | — |  |  | — |
Total |  | $ | 570 |  |  | $ | 571 |
U.S. Government sponsored entities asset-backed securities: |  |  |  |  |  |
Total |  | $ | 552,034 |  |  | $ | 565,028 |

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 + Details
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