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Investment Securities (Details 3) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Available for sale: |  |
Fair value, less than 12 Months | $ 665,818 | $ 2,534,354
Unrealized losses, less than 12 Months | (3,378) | (101,585)
Fair value, 12 Months or More | 1,930,562 | 434,554
Unrealized losses, 12 Months or More | (63,155) | (31,534)
Fair value, total | 2,596,380 | 2,968,908
Unrealized losses, total | (66,533) | (133,119)
Collateralized Mortgage Backed Securities [Member] |  |
Available for sale: |  |
Fair value, less than 12 Months | 664,223 | 2,459,565
Unrealized losses, less than 12 Months | (3,327) | (98,022)
Fair value, 12 Months or More | 1,889,249 | 420,262
Unrealized losses, 12 Months or More | (57,373) | (26,552)
Fair value, total | 2,553,472 | 2,879,827
Unrealized losses, total | (60,700) | (124,574)
US States and Political Subdivisions Debt Securities [Member] |  |
Available for sale: |  |
Fair value, less than 12 Months | 1,595 | 55,327
Unrealized losses, less than 12 Months | (51) | (3,025)
Fair value, 12 Months or More | 30,833 | 14,292
Unrealized losses, 12 Months or More | (5,512) | (4,982)
Fair value, total | 32,428 | 69,619
Unrealized losses, total | (5,563) | (8,007)
Equity Securities [Member] |  |
Available for sale: |  |
Fair value, less than 12 Months |  | 19,462
Unrealized losses, less than 12 Months |  | (538)
Fair value, 12 Months or More | 10,480 |
Unrealized losses, 12 Months or More | (270) |
Fair value, total | 10,480 | 19,462
Unrealized losses, total | $ (270) | $ (538)

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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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