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Investment Securities (Tables) | 12 Months Ended
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Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract] |
Schedule of marketable securities | Investment securities at December 31, 2012 were as follows:
(In thousands) |  | Amortized Cost |  | Gross Unrealized/Unrecognized Holding Gains |  | Gross Unrealized/Unrecognized Holding Losses |  | Estimated Fair Value
2012: |  |  |  |  |  |  |  |
Securities Available-for-Sale |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | 695,655 |  |  | $ | 1,352 |  |  | $ | 1,280 |  |  | $ | 695,727 |
Obligations of states and political subdivisions |  | 984 |  |  | 19 |  |  | — |  |  | 1,003 |
U.S. Government sponsored entities’ asset-backed securities |  | 401,882 |  |  | 14,067 |  |  | 447 |  |  | 415,502 |
Other equity securities |  | 1,137 |  |  | 1,085 |  |  | — |  |  | 2,222 |
Total |  | $ | 1,099,658 |  |  | $ | 16,523 |  |  | $ | 1,727 |  |  | $ | 1,114,454 |
2012: |  |  |  |  |  |  |  |
Securities Held-to-Maturity |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 570 |  |  | $ | 2 |  |  | $ | — |  |  | $ | 572 |
U.S. Government sponsored entities’ asset-backed securities |  | 400,820 |  |  | 9,351 |  |  | 38 |  |  | 410,133 |
Total |  | $ | 401,390 |  |  | $ | 9,353 |  |  | $ | 38 |  |  | $ | 410,705 |
Investment securities at December 31, 2013 were as follows:
(In thousands) |  | Amortized Cost |  | Gross Unrealized/Unrecognized Holding Gains |  | Gross Unrealized/Unrecognized Holding Losses |  | Estimated Fair Value
2013: |  |  |  |  |  |  |  |  |  |  |  |
Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | 570,632 |  |  | $ | — |  |  | $ | 45,496 |  |  | $ | 525,136 |
U.S. Government sponsored entities’ asset-backed securities |  | 650,391 |  |  | 8,070 |  |  | 9,990 |  |  | 648,471 |
Other equity securities |  | 1,120 |  |  | 1,539 |  |  | — |  |  | 2,659 |
Total |  | $ | 1,222,143 |  |  | $ | 9,609 |  |  | $ | 55,486 |  |  | $ | 1,176,266 |
2013: |  |  |  |  |  |  |  |  |  |  |  |
Securities Held-to-Maturity |  |  |  |  |  |  |  |  |  |  |  |
Obligations of states and political subdivisions |  | $ | 240 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 241 |
U.S. Government sponsored entities’ asset-backed securities |  | 181,821 |  |  | 5,382 |  |  | 42 |  |  | 187,161 |
Total |  | $ | 182,061 |  |  | $ | 5,383 |  |  | $ | 42 |  |  | $ | 187,402 |
Schedule of unrealized loss on investments | The following table provides detail on investment securities with unrealized losses aggregated by investment category and length of time the individual securities had been in a continuous loss position at December 31, 2012:
|  | Less than 12 Months |  | 12 Months or Longer |  | Total
(In thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
2012: |  |  |  |  |  |  |  |  |  |  |  |
Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | 177,470 |  |  | 1,280 |  |  | — |  |  | — |  |  | 177,470 |  |  | 1,280 |
U.S. Government sponsored entities' asset-backed securities |  | 123,631 |  |  | 447 |  |  | — |  |  | — |  |  | 123,631 |  |  | 447 |
Total |  | 301,101 |  |  | 1,727 |  |  | — |  |  | — |  |  | 301,101 |  |  | 1,727 |
2012: |  |  |  |  |  |  |  |  |  |  |  |
Securities Held-to-Maturity |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities' asset-backed securities |  | $ | 10,120 |  |  | $ | 38 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,120 |  |  | $ | 38 |
The following table provides detail on investment securities with unrealized losses aggregated by investment category and length of time the individual securities had been in a continuous loss position at December 31, 2013:
|  | Less than 12 Months |  | 12 Months or Longer |  | Total
(In thousands) |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
2013: |  |  |  |  |  |  |  |  |  |  |  |
Securities Available-for-Sale |  |  |  |  |  |  |  |  |  |  |  |
Obligations of U.S. Treasury and other U.S. Government sponsored entities |  | $ | 377,626 |  |  | $ | 29,256 |  |  | $ | 147,510 |  |  | $ | 16,240 |  |  | $ | 525,136 |  |  | $ | 45,496 |
U.S. Government sponsored entities' asset-backed securities |  | 404,035 |  |  | 8,917 |  |  | 21,572 |  |  | 1,073 |  |  | 425,607 |  |  | 9,990 |
Total |  | $ | 781,661 |  |  | $ | 38,173 |  |  | $ | 169,082 |  |  | $ | 17,313 |  |  | $ | 950,743 |  |  | $ | 55,486 |
2013: |  |  |  |  |  |  |  |  |  |  |  |
Securities Held-to-Maturity |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government sponsored entities’ asset-backed securities |  | $ | 5,781 |  |  | $ | 42 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,781 |  |  | $ | 42 |
Schedule of contractual maturity of debt securities | The amortized cost and estimated fair value of investments in debt securities at December 31, 2013, 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.
(In thousands) |  | Amortized Cost |  | Estimated Fair Value |  | Weighted Average Yield
Securities Available-for-Sale |  |  |  |  |  |
U.S. Treasury and other U.S. Government sponsored entities’ notes: |  |  |  |  |  |
Due one through five years |  | 50,000 |  |  | 46,800 |  |  | 2.00 | %
Due five through ten years |  | 396,882 |  |  | 367,580 |  |  | 2.43 | %
Due in over ten years |  | 123,750 |  |  | 110,756 |  |  | 1.74 | %
Total |  | $ | 570,632 |  |  | $ | 525,136 |  |  | 2.24 | %
U.S. Government sponsored entities’ asset-backed securities: |  |  |  |  |  |
Total |  | $ | 650,391 |  |  | $ | 648,471 |  |  | 2.47 | %
Securities Held-to-Maturity |  |  |  |  |  |
Obligations of states and political subdivisions: |  |  |  |  |  |
Due within one year |  | $ | 240 |  |  | $ | 241 |  |  | 4.46 | %
Total |  | $ | 240 |  |  | $ | 241 |  |  | 4.46 | %
U.S. Government sponsored entities’ asset-backed securities: |  |  |  |  |  |
Total |  | $ | 181,821 |  |  | $ | 187,161 |  |  | 3.69 | %

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- Definition Tabular disclosure of marketable securities. This may consist of investments in certain debt and equity securities, short-term investments and other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
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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=27724398&loc=d3e27290-111563 + Details
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