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Investment Securities (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2012 | Dec. 31, 2011
Investment Securities [Abstract] |  |
Schedule Of Investment Securities |
(in thousands)
Securities Available-for-Sale | 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 | $ 599,125 | $ 478 | $ 2,128 | $ 597,475
Obligations of states and political subdivisions | 2,616 | 39 | - | 2,655
U.S. Government sponsored entities asset-backed securities | 388,444 | 16,734 | - | 405,178
Other equity securities | 1,188 | 1,014 | 29 | 2,173
Total | $ 991,373 | $ 18,265 | $ 2,157 | $ 1,007,481
Securities Held-to-Maturity | Amortized Cost | Gross Unrecognized Holding Gains | Gross Unrecognized Holding Losses | Estimated Fair Value
Obligations of states and political subdivisions | $ 1,427 | $ 3 | $ - | $ 1,430
U.S. Government sponsored entities asset-backed securities | 780,823 | 13,102 | 280 | 793,645
Total | $ 782,250 | $ 13,105 | $ 280 | $ 795,075
(in thousands)
Securities Available-for-Sale | 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 | 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
(in thousands)
Securities Available-for-Sale | 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 | 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
Schedule Of Unrealized Loss On Securities |
(in thousands) | Less than 12 months | 12 months or longer | Total
Securities Available-for-Sale | Fair value | Unrealized losses | Fair value | Unrealized losses | Fair value | Unrealized losses
Obligations of U.S. Treasury and other U.S. Government agencies | $ 347,872 | $ 2,128 | $ - | $ - | $347,872 | $ 2,128
Other equity securities | - | - | 74 | 29 | 74 | 29
Total | $347,872 | $ 2,128 | $ 74 | $ 29 | $347,946 | $ 2,157
Securities Held-to-Maturity |  |  |  |  |  |
U.S. Government sponsored entities asset-backed securities | $ 62,420 | $ 280 | $ - | $ - | $62,420 | $ 280
# #
(in thousands) | Less than 12 months | 12 months or longer | Total
Securities Available-for-Sale | Fair value | Unrealized losses | Fair value | Unrealized losses | Fair value | Unrealized losses
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
Amortized Cost And Estimated Fair Value Of Investments In Debt Securities By Contractual Maturity |
(in thousands) | Amortized cost | Fair value
Securities Available-for-Sale |  |
U.S. Treasury and sponsored entities notes: |  |
Due within one year | $ 249,125 | $ 249,604
Due one through five years | 275,000 | 273,532
Due five through ten years | 75,000 | 74,339
Total | $ 599,125 | $ 597,475
Obligations of states and political subdivisions: |
Due within one year | $ 2,121 | $ 2,130
Due one through five years | 495 | 525
| $ 2,616 | $ 2,655
U.S. Government sponsored entities asset-backed securities: |
Total | $ 388,444 | $ 405,178
(in thousands) | Amortized cost | Fair value
Securities Held-to-Maturity |  |
Obligations of state and political subdivisions: |
Due within one year | $ 1,427 | $ 1,430
Total | $ 1,427 | $ 1,430
U.S. Government sponsored entities asset-backed securities: |
Total | $ 780,823 | $ 793,645

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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 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27232-111563 Reference 2: 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 3: 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 4: 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=6872113&loc=d3e27161-111563 Reference 5: 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 6: 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 + Details
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