XML 70 R59.htm IDEA: XBRL DOCUMENT
v3.20.2

Fair Value - Schedule of Financial Instruments Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Assets: |  |
Assets, Total | $ 14,435 | $ 15,753
Liabilities: |  |
Liabilities, Total | 27,397 | 18,666
Level 2 |  |
Assets: |  |
Assets, Total | 14,435 | 15,753
Liabilities: |  |
Liabilities, Total | 27,397 | 18,666
Forward Contract Agreements | Prepaid Expenses and Other Assets |  |
Assets: |  |
Assets, Total |  | 733
Forward Contract Agreements | Level 2 | Prepaid Expenses and Other Assets |  |
Assets: |  |
Assets, Total |  | 733
Deferred Compensation Investments in Cash Surrender Life Insurance | Other Assets |  |
Assets: |  |
Assets, Total | 14,435 | 15,020
Deferred Compensation Investments in Cash Surrender Life Insurance | Level 2 | Other Assets |  |
Assets: |  |
Assets, Total | 14,435 | 15,020
Deferred Compensation Plan Liabilities | Other Long-Term Liabilities |  |
Liabilities: |  |
Liabilities, Total | 14,353 | 14,855
Deferred Compensation Plan Liabilities | Level 2 | Other Long-Term Liabilities |  |
Liabilities: |  |
Liabilities, Total | 14,353 | 14,855
Interest Rate Swap | Other Long-Term Liabilities |  |
Liabilities: |  |
Liabilities, Total | 13,044 | 3,811
Interest Rate Swap | Level 2 | Other Long-Term Liabilities |  |
Liabilities: |  |
Liabilities, Total | $ 13,044 | $ 3,811

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities. + References No definition available. + Details
Name: | us-gaap_FinancialLiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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