Employee Benefit Plans	12 Months Ended
	Dec. 31, 2022
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit PlansCRA maintains a qualified defined-contribution plan under Section 401(k) of the Internal Revenue Code, covering all regular U.S. employees who meet specified age, hour, and service requirements. Company contributions are made at the discretion of CRA, and cannot exceed the maximum amount deductible under applicable provisions of the Internal Revenue Code. CRA also has defined-contribution plans covering employees in Canada (the "Canada plan") and the United Kingdom (the "United Kingdom plan"). Company contributions to the Canada plan are made at the discretion of CRA, while company contributions to the United Kingdom plan are made in accordance with the minimum required contributions per the United Kingdom auto-enrolment legislation. CRA also provides a pension plan contribution for its Belgium employees. Company contributions to the Belgium pension fund are made in accordance with the minimum required contributions based on statutory requirements. CRA also provides a private pension plans for its Brazil employees (the “Brazil plan”) and Norway employees (the "Norway plan"). Company contributions to the Brazil plan and Norway plan are made in accordance with statutory requirements. Company contributions under these plans amounted to approximately $5.4 million, $5.0 million, and $4.5 million for fiscal 2022, fiscal 2021, and fiscal 2020, respectively.