Subsequent Events	6 Months Ended
Jul. 04, 2026
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 31, 2026, CRA and its subsidiaries CRA International (UK) Limited (the “UK Borrower”) and CRA International Limited (the “Canadian Borrower” and, together with the UK Borrower, the “Designated Borrowers”; the Designated Borrowers, together with the Company, the “Borrowers”) entered into an Amended and Restated Credit Agreement (the “Credit Agreement”) among the Borrowers, Bank of America, N.A., as swingline lender, a letter of credit issuing bank and administrative agent, and the other letter of credit issuing banks and lenders party thereto. The Credit Agreement amends and restates the Company’s Credit Agreement, dated as of August 19, 2022. The Credit Agreement provides for aggregate credit facilities of up to $400 million, consisting of a $325 million revolving credit facility and a $75 million term loan facility. On August 6, 2026, CRA announced that its Board of Directors declared a quarterly cash dividend of $0.57 per common share, payable on September 14, 2026 to shareholders of record as of August 25, 2026.

Subsequent Events

6 Months Ended

Jul. 04, 2026

On July 31, 2026, CRA and its subsidiaries CRA International (UK) Limited (the “UK Borrower”) and CRA International Limited (the “Canadian Borrower” and, together with the UK Borrower, the “Designated Borrowers”; the Designated Borrowers, together with the Company, the “Borrowers”) entered into an Amended and Restated Credit Agreement (the “Credit Agreement”) among the Borrowers, Bank of America, N.A., as swingline lender, a letter of credit issuing bank and administrative agent, and the other letter of credit issuing banks and lenders party thereto. The Credit Agreement amends and restates the Company’s Credit Agreement, dated as of August 19, 2022. The Credit Agreement provides for aggregate credit facilities of up to $400 million, consisting of a $325 million revolving credit facility and a $75 million term loan facility.

On August 6, 2026, CRA announced that its Board of Directors declared a quarterly cash dividend of $0.57 per common share, payable on September 14, 2026 to shareholders of record as of August 25, 2026.