XML 99 R80.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Fair Value of Financial Instruments - Summary of Changes in Contingent Consideration Liability (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 28, 2024 | Dec. 30, 2023
Summary of changes in contingent consideration liabilities |  |
Beginning balance | $ 190 | $ 1,056
Remeasurement of acquisition-related contingent consideration | (190) | (934)
Accretion | 0 | 68
Ending balance | $ 0 | $ 190

X
- Definition Amount of increase in the value of a contingent consideration liability, arising from accretion. + References No definition available. + Details
Name: | crai_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAccretion
Namespace Prefix: | crai_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Remeasurement of Acquisition-Related Contingent Consideration + References No definition available. + Details
Name: | crai_FairValueMeasurementWithUnobservableInputsReconciliationRemeasurementOfAcquisitionRelatedContingentConsideration
Namespace Prefix: | crai_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant