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v2.4.1.9

Prepaid Expenses and Other Current Assets, and Other Assets (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Apr. 04, 2015 | Jan. 03, 2015
Prepaid expenses and other assets disclosures |  |
Term of forgivable loans or advances to employees and non-employee experts, minimum | 3 years |
Term of forgivable loans or advances to employees and non-employee experts, maximum | 8 years |
Forgivable loans issued to future employees for future service | $ 5,400,000 crai_ForgivableLoansAdvancesToEmployeesAndNonEmployee |
Other assets |  |
Forgivable loans to employees and non-employee experts | 44,017,000 crai_ForgivableLoansAndTermLoansToEmployeesAndNonEmployeeExpertsNoncurrent | 42,907,000 crai_ForgivableLoansAndTermLoansToEmployeesAndNonEmployeeExpertsNoncurrent
Other | 4,934,000 us-gaap_OtherAssetsMiscellaneousNoncurrent | 5,008,000 us-gaap_OtherAssetsMiscellaneousNoncurrent
Total | $ 48,951,000 us-gaap_OtherAssetsNoncurrent | $ 47,915,000 us-gaap_OtherAssetsNoncurrent

X
- Definition Represents the amount of forgivable loans or advances to employees and non-employee experts for future service. These loans are classified in "prepaid and other assets" and "other assets" on the balance sheet. + References No definition available. + Details
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Namespace Prefix: | crai_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the maximum term of forgivable loans or advances issuable to employees and non-employee experts. + References No definition available. + Details
Name: | crai_ForgivableLoansAdvancesToEmployeesAndNonEmployeeExpertsTermMaximum
Namespace Prefix: | crai_
Data Type: | xbrli:durationItemType
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X
- Definition Represents the minimum term of forgivable loans or advances issuable to employees and non-employee experts. + References No definition available. + Details
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X
- Definition Represents the noncurrent portion of the amount of forgivable loans or term loans issuable to employees and non-employee experts. These loans are classified in "prepaid and other assets" and "other assets" on the balance sheet. + References No definition available. + Details
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- Details
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- Details
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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Aggregate carrying amount, as of the balance sheet date, of noncurrent assets not separately disclosed in the balance sheet. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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