XML 19 R8.htm IDEA: XBRL DOCUMENT v3.4.0.3

Description of Business	3 Months Ended
	Apr. 02, 2016
Description of Business
Description of Business	1. Description of Business         CRA International, Inc. ("CRA") is a worldwide leading consulting services firm that applies advanced analytic techniques and in-depth industry knowledge to complex engagements for a broad range of clients. CRA offers its services in two broad areas: litigation, regulatory, and financial consulting and management consulting. CRA operates in two business segments, which are consulting services and NeuCo. CRA operates its business under its registered trade name, Charles River Associates.

X

- References

No definition available.

+ Details

Name:	crai_DescriptionOfBusinessDisclosureAbstract
Namespace Prefix:	crai_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The entire disclosure for the nature of an entity's business, major products or services, principal markets including location, and the relative importance of its operations in each business and the basis for the determination, including but not limited to, assets, revenues, or earnings. For an entity that has not commenced principal operations, disclosures about the risks and uncertainties related to the activities in which the entity is currently engaged and an understanding of what those activities are being directed toward.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6003-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=51801978&loc=SL51803626-108592

+ Details

Name:	us-gaap_NatureOfOperations
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration