XML 105 R90.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Fair Value (Fair Value By Level) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Assets: |  |
Available for sale securities | $ 4,177,349 | $ 4,199,372
Assets/liabilities measured at fair value |  |
Assets: |  |
Available for sale securities | 4,177,349 | 4,199,372
Assets/liabilities measured at fair value | Residential mortgage-backed securities |  |
Assets: |  |
Available for sale securities | 3,894,470 | 3,893,211
Assets/liabilities measured at fair value | Obligations of states and political subdivisions |  |
Assets: |  |
Available for sale securities | 254,972 | 277,704
Assets/liabilities measured at fair value | Equity securities |  |
Assets: |  |
Available for sale securities | 27,907 | 28,457
Measured on a recurring basis: |  |
Assets: |  |
Available for sale securities | 4,177,349 | 4,199,372
Measured on a recurring basis: | Residential mortgage-backed securities |  |
Assets: |  |
Available for sale securities | 3,894,470 | 3,893,210
Measured on a recurring basis: | Obligations of states and political subdivisions |  |
Assets: |  |
Available for sale securities | 254,972 | 277,705
Measured on a recurring basis: | Equity securities |  |
Assets: |  |
Available for sale securities | 27,907 | 28,457
Measured on a recurring basis: | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Assets: |  |
Available for sale securities | 27,907 | 28,457
Measured on a recurring basis: | Quoted Prices in Active Markets for Identical Assets (Level 1) | Equity securities |  |
Assets: |  |
Available for sale securities | 27,907 | 28,457
Measured on a recurring basis: | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Available for sale securities | 4,131,837 | 4,149,686
Measured on a recurring basis: | Significant Other Observable Inputs (Level 2) | Residential mortgage-backed securities |  |
Assets: |  |
Available for sale securities | 3,876,865 | 3,871,981
Measured on a recurring basis: | Significant Other Observable Inputs (Level 2) | Obligations of states and political subdivisions |  |
Assets: |  |
Available for sale securities | 254,972 | 277,705
Measured on a recurring basis: | Significant Unobservable Inputs (Level 3) |  |
Assets: |  |
Available for sale securities | 17,605 | 21,229
Measured on a recurring basis: | Significant Unobservable Inputs (Level 3) | Residential mortgage-backed securities |  |
Assets: |  |
Available for sale securities | $ 17,605 | $ 21,229

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: 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=66010992&loc=d3e26610-111562 + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_MortgageBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |