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Available-For-Sale And Held-To-Maturity Securities (Schedule Of Gross Unrealized Losses And The Estimated Fair Value By Length Of Time In A Loss Position) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($)
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |
Available-for-sale Securities, Gross unrealized losses, Less than 12 months | $ (15,639)
Available-for-sale Securities, Estimated fair value, Less than 12 months | 1,034,832
Available-for-sale Securities, Gross unrealized losses, 12 months or more | (4,772)
Available-for-sale Securities, Estimated fair value, 12 months or more | 247,445
Available-for-sale Securities, Gross unrealized losses, Total | (20,411)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total | 1,282,277
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | (17,551)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1,189,914
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | (2,895)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 54,259
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total | (20,446)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total | 1,244,173
U.S. Government Agency Securities [Member] |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |
Available-for-sale Securities, Gross unrealized losses, Less than 12 months | (18)
Available-for-sale Securities, Estimated fair value, Less than 12 months | 3,497
Available-for-sale Securities, Gross unrealized losses, Total | (18)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total | 3,497
State And Municipal Securities [Member] |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |
Available-for-sale Securities, Gross unrealized losses, Less than 12 months | (372)
Available-for-sale Securities, Estimated fair value, Less than 12 months | 12,297
Available-for-sale Securities, Gross unrealized losses, 12 months or more | (3,204)
Available-for-sale Securities, Estimated fair value, 12 months or more | 60,192
Available-for-sale Securities, Gross unrealized losses, Total | (3,576)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total | 72,489
Corporate Fixed Income Securities [Member] |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |
Available-for-sale Securities, Gross unrealized losses, Less than 12 months | (8,602)
Available-for-sale Securities, Estimated fair value, Less than 12 months | 566,692
Available-for-sale Securities, Gross unrealized losses, Total | (8,602)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total | 566,692
Asset-Backed Securities [Member] |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |
Available-for-sale Securities, Gross unrealized losses, Less than 12 months | (1,068)
Available-for-sale Securities, Estimated fair value, Less than 12 months | 261,341
Available-for-sale Securities, Gross unrealized losses, Total | (1,068)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total | 261,341
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | (534)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 294,656
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | (2,862)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 52,169
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total | (3,396)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total | 346,825
Mortgage Backed Securities [Member] | Agency [Member] |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |
Available-for-sale Securities, Gross unrealized losses, Less than 12 months | (876)
Available-for-sale Securities, Estimated fair value, Less than 12 months | 120,004
Available-for-sale Securities, Gross unrealized losses, 12 months or more | (1,428)
Available-for-sale Securities, Estimated fair value, 12 months or more | 185,415
Available-for-sale Securities, Gross unrealized losses, Total | (2,304)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total | 305,419
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Loss | (17,017)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 895,258
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | (20)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 1,415
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total | (17,037)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total | 896,673
Mortgage Backed Securities [Member] | Commercial [Member] |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |
Available-for-sale Securities, Gross unrealized losses, Less than 12 months | (4,703)
Available-for-sale Securities, Estimated fair value, Less than 12 months | 71,001
Available-for-sale Securities, Gross unrealized losses, Total | (4,703)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total | 71,001
Mortgage Backed Securities [Member] | Non-Agency [Member] |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |
Available-for-sale Securities, Gross unrealized losses, 12 months or more | (140)
Available-for-sale Securities, Estimated fair value, 12 months or more | 1,838
Available-for-sale Securities, Gross unrealized losses, Total | (140)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value, Total | 1,838
Held-to-maturity Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss | (13)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 675
Held-to-maturity Securities, Continuous Unrealized Loss Position, Aggregate Loss, Total | (13)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value, Total | $ 675

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- Definition Amount of unrealized loss on securities classified as available-for-sale that have been in a 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 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 + Details
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