XML 49 R39.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Summary of Held-to-Maturity and Available-for-Sale Securities Having Continuous Unrealized Loss Position (Detail) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Debt Securities |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value | $ 2,437,529 | $ 895,352
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss | 38,530 | 4,347
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value | 118,675 | 108,144
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss | 9,814 | 10,099
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 2,556,204 | 1,003,496
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | 48,344 | 14,446
Debt Securities | GSE certificates |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value | 959,158 | 232,546
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss | 23,556 | 535
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value | 19,434 | 20,440
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss | 1,284 | 664
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 978,592 | 252,986
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | 24,840 | 1,199
Debt Securities | GSE debentures |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value |  | 333,045
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss |  | 2,665
Temporarily Impaired Available-for-Sale Securities, Total Fair Value |  | 333,045
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss |  | 2,665
Debt Securities | GSE CMOs |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value | 329,114 | 118,694
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss | 4,418 | 826
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 329,114 | 118,694
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | 4,418 | 826
Debt Securities | U.S. Treasury obligations |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value | 199,695 | 199,898
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss | 143 | 62
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 199,695 | 199,898
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | 143 | 62
Debt Securities | Municipal bonds |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value |  | 11,169
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss |  | 259
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value | 50,087 | 41,054
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss | 2,119 | 542
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 50,087 | 52,223
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | 2,119 | 801
Debt Securities | Capital trust notes |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value | 37,883 | 35,105
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss | 5,876 | 8,632
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 37,883 | 35,105
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | 5,876 | 8,632
Debt Securities | U.S. Treasury and GSE Obligations |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value | 524,847 |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss | 9,146 |
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 524,847 |
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | 9,146 |
Debt Securities | Corporate bonds |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value | 293,218 |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss | 898 |
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 293,218 |
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | 898 |
Debt Securities | Asset backed securities |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value | 112,408 |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss | 158 |
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 112,408 |
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | 158 |
Equity securities |  |
Schedule of Investments [Line Items] |  |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Fair Value | 19,089 |
Temporarily Impaired Available-for-Sale Securities, Less than Twelve Months Unrealized Loss | 211 |
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Fair Value | 11,271 | 11,545
Temporarily Impaired Available-for-Sale Securities, Twelve Months or Longer Unrealized Loss | 535 | 261
Temporarily Impaired Available-for-Sale Securities, Total Fair Value | 30,360 | 11,545
Temporarily Impaired Available-for-Sale Securities, Total Unrealized Loss | $ 746 | $ 261

X
- 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 No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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 less than twelve months. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CollateralizedMortgageObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_MunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CorporateNoteSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USTreasuryAndGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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