XML 109 R76.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Summary of Pension Assets in Three Tier Fair Value Hierarchy for Benefit Plan (Detail) - USD ($) | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | ---
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Receivables |  | $ 400,000 | $ 100,000 |
U.S. Benefit Plans |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 131,100,000 | 128,100,000 | $ 134,000,000
U.S. Benefit Plans | Total |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value | [1] | 130,700,000 | 128,200,000 |
U.S. Benefit Plans | Total | Cash and Cash Equivalents |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 5,700,000 | 6,800,000 |
U.S. Benefit Plans | Total | US Large Cap Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 36,500,000 | 37,800,000 |
U.S. Benefit Plans | Total | US Small / Mid Cap Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 16,900,000 | 18,000,000 |
U.S. Benefit Plans | Total | Developed International |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 16,300,000 | 19,700,000 |
U.S. Benefit Plans | Total | Equity Securities Emerging Markets |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 12,400,000 | 6,900,000 |
U.S. Benefit Plans | Total | US Government Debt Securities | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 7,100,000 | 3,000,000 |
U.S. Benefit Plans | Total | Asset-backed Securities | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 9,900,000 | 7,700,000 |
U.S. Benefit Plans | Total | Corporate Bond Securities [Member] | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 14,900,000 | 13,100,000 |
U.S. Benefit Plans | Total | Fixed Income Funds [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 700,000 |
U.S. Benefit Plans | Total | Mutual Fund [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 5,600,000 | 10,500,000 |
U.S. Benefit Plans | Total | Real Estate [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 5,400,000 | 4,000,000 |
U.S. Benefit Plans | Level 1 |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 97,600,000 | 100,100,000 |
U.S. Benefit Plans | Level 1 | Cash and Cash Equivalents |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 5,700,000 | 6,800,000 |
U.S. Benefit Plans | Level 1 | US Large Cap Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 36,400,000 | 37,700,000 |
U.S. Benefit Plans | Level 1 | US Small / Mid Cap Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 16,900,000 | 18,000,000 |
U.S. Benefit Plans | Level 1 | Developed International |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 8,600,000 | 12,800,000 |
U.S. Benefit Plans | Level 1 | Equity Securities Emerging Markets |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 11,900,000 | 6,900,000 |
U.S. Benefit Plans | Level 1 | US Government Debt Securities | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 7,100,000 | 2,700,000 |
U.S. Benefit Plans | Level 1 | Asset-backed Securities | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 1 | Corporate Bond Securities [Member] | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 1 | Fixed Income Funds [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 700,000 |
U.S. Benefit Plans | Level 1 | Mutual Fund [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 5,600,000 | 10,500,000 |
U.S. Benefit Plans | Level 1 | Real Estate [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 5,400,000 | 4,000,000 |
U.S. Benefit Plans | Level 2 |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 33,100,000 | 28,100,000 |
U.S. Benefit Plans | Level 2 | Cash and Cash Equivalents |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 2 | US Large Cap Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 100,000 | 100,000 |
U.S. Benefit Plans | Level 2 | US Small / Mid Cap Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 2 | Developed International |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 7,700,000 | 6,900,000 |
U.S. Benefit Plans | Level 2 | Equity Securities Emerging Markets |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 500,000 | 0 |
U.S. Benefit Plans | Level 2 | US Government Debt Securities | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 300,000 |
U.S. Benefit Plans | Level 2 | Asset-backed Securities | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 9,900,000 | 7,700,000 |
U.S. Benefit Plans | Level 2 | Corporate Bond Securities [Member] | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 14,900,000 | 13,100,000 |
U.S. Benefit Plans | Level 2 | Fixed Income Funds [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 2 | Mutual Fund [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 2 | Real Estate [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | Cash and Cash Equivalents |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | US Large Cap Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | US Small / Mid Cap Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | Developed International |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | Equity Securities Emerging Markets |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | US Government Debt Securities | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | Asset-backed Securities | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | Corporate Bond Securities [Member] | Fixed Income Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | Fixed Income Funds [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | Mutual Fund [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
U.S. Benefit Plans | Level 3 | Real Estate [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
Non-U.S. Benefit Plan |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 48,500,000 | 54,300,000 | $ 59,000,000
Non-U.S. Benefit Plan | Total |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 48,500,000 | 54,300,000 |
Non-U.S. Benefit Plan | Total | Cash and Cash Equivalents |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 400,000 | 9,200,000 |
Non-U.S. Benefit Plan | Total | Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 41,900,000 | 40,100,000 |
Non-U.S. Benefit Plan | Total | US Government Agencies Debt Securities [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 1,300,000 | 2,700,000 |
Non-U.S. Benefit Plan | Total | Company bonds and debt securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 4,900,000 | 2,300,000 |
Non-U.S. Benefit Plan | Level 1 |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 4,300,000 | 18,700,000 |
Non-U.S. Benefit Plan | Level 1 | Cash and Cash Equivalents |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 400,000 | 9,200,000 |
Non-U.S. Benefit Plan | Level 1 | Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 5,300,000 |
Non-U.S. Benefit Plan | Level 1 | US Government Agencies Debt Securities [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 1,300,000 | 2,700,000 |
Non-U.S. Benefit Plan | Level 1 | Company bonds and debt securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 2,600,000 | 1,500,000 |
Non-U.S. Benefit Plan | Level 2 |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 44,200,000 | 35,600,000 |
Non-U.S. Benefit Plan | Level 2 | Cash and Cash Equivalents |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
Non-U.S. Benefit Plan | Level 2 | Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 41,900,000 | 34,800,000 |
Non-U.S. Benefit Plan | Level 2 | US Government Agencies Debt Securities [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
Non-U.S. Benefit Plan | Level 2 | Company bonds and debt securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 2,300,000 | 800,000 |
Non-U.S. Benefit Plan | Level 3 |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
Non-U.S. Benefit Plan | Level 3 | Cash and Cash Equivalents |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
Non-U.S. Benefit Plan | Level 3 | Equity Securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
Non-U.S. Benefit Plan | Level 3 | US Government Agencies Debt Securities [Member] |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | 0 | 0 |
Non-U.S. Benefit Plan | Level 3 | Company bonds and debt securities |  |  |  |
Fair Value Hierarchy Of Plan Assets By Category [Line Items] |  |  |  |
Total assets at fair value |  | $ 0 | $ 0 |
[1] | Total assets at fair value in the table above exclude a net receivable of $0.4 million and a net payable of $0.1 million at December 31, 2016 and 2015, respectively.

X
- Definition Fair Value Hierarchy Of Plan Assets By Category [Line Items] + References No definition available. + Details
Name: | fss_FairValueHierarchyOfPlanAssetsByCategoryLineItems
Namespace Prefix: | fss_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=64937038&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6749337 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6520858 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of receivables, including, but not limited to, trade account receivables, note receivables, and loan receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(5)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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(7)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13728-122682 Reference 4: 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(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_ReceivablesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=fss_UnitedStatesLargeCapEquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=fss_UnitedStatesSmallMidCapEquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=fss_ForeignEquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=fss_EquitySecuritiesEmergingMarketsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_USGovernmentDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_MutualFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_RealEstateMember
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: |

X
- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_ForeignPensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |