XML 165 R138.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Benefit Plans - Plan Assets (Details) - Defined Benefit Pension Plans - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | $ 82,914 | $ 102,605
Level 1 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 82,914 | 80,395
Level 2 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 0 | 22,210
Level 3 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 0 | 0
Cash and cash equivalents |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 202 | 151
Cash and cash equivalents | Level 1 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 202 | 151
Cash and cash equivalents | Level 2 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 0 | 0
Cash and cash equivalents | Level 3 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | $ 0 | 0
Equity Securities | Ecoservices Pension Equity Plan |  |
Defined Benefit Plan Disclosure |  |
Target asset plan allocation percentage | 10.00% |
Equity Securities | Ecoservices Hourly Pension Plan |  |
Defined Benefit Plan Disclosure |  |
Target asset plan allocation percentage | 30.00% |
U.S. investment funds |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | $ 12,150 | 28,040
U.S. investment funds | Level 1 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 12,150 | 28,040
U.S. investment funds | Level 2 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 0 | 0
U.S. investment funds | Level 3 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 0 | 0
International investment funds |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 7,816 | 18,770
International investment funds | Level 1 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 7,816 | 18,770
International investment funds | Level 2 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 0 | 0
International investment funds | Level 3 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | $ 0 | 0
Fixed income securities | Ecoservices Pension Equity Plan |  |
Defined Benefit Plan Disclosure |  |
Target asset plan allocation percentage | 90.00% |
Fixed income securities | Ecoservices Hourly Pension Plan |  |
Defined Benefit Plan Disclosure |  |
Target asset plan allocation percentage | 70.00% |
Government securities |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | $ 28,869 | 16,766
Government securities | Level 1 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 28,869 | 16,766
Government securities | Level 2 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 0 | 0
Government securities | Level 3 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 0 | 0
Corporate bonds |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 33,877 | 16,668
Corporate bonds | Level 1 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 33,877 | 16,668
Corporate bonds | Level 2 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | 0 | 0
Corporate bonds | Level 3 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets | $ 0 | 0
Insurance contracts |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets |  | 22,210
Insurance contracts | Level 1 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets |  | 0
Insurance contracts | Level 2 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets |  | 22,210
Insurance contracts | Level 3 |  |
Defined Benefit Plan Disclosure |  |
Fair value of plan assets |  | $ 0

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_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(02) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
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_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
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_RetirementPlanNameAxis=ecvt_EcoServicesPensionEquityPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=ecvt_EcoServicesHourlyPensionPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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