Subsequent Event	12 Months Ended
Dec. 28, 2013
Subsequent Event
Subsequent Event	19. Subsequent Event On February 24, 2014, CRA entered into a new lease with BP Hancock LLC, as landlord, for the 9th and 10th floors (a total of 57,602 square feet) of the same office building at 200 Clarendon Street, Boston, Massachusetts in which CRA's Boston offices are currently located. The lease's base term will expire ten years from the date that CRA begins paying fixed rent under the lease and, subject to certain conditions, will be extendible by CRA for two five-year periods. The annual fixed rent for this office space (which does not include customary operating costs and expenses) will be $42 per square foot, or $2.4 million, for the first year of the lease's base term and will increase at the rate of $1.00 per square foot during the remainder of the lease's base term. The lease gives CRA a right of first refusal to rent certain additional office space in the office building if it becomes available. The performance of our obligations under the lease is secured by a $1 million letter of credit. Concurrently with our entering into this new lease, CRA also entered into an amendment of its existing lease with BP Hancock LLC, as landlord, for the office space it currently rents in the office building described above, which currently expires on March 31, 2015. Except with respect to 25,099 square feet of office space covered by this lease, the amendment either extends the term of this lease to, or if prior to March 31, 2015 terminates this lease on, the day prior to the date that CRA begins paying fixed rent under the new lease described above. If the term of the existing lease is extended, the amendment provides that the base rent payable under this lease during the extension period will be $2.4 million per year. CRA currently expects that the term of the new lease will commence, and the relocation of its Boston offices to the 9th and 10th floors of the office building at 200 Clarendon Street, Boston, Massachusetts will occur, sometime in the second quarter of fiscal 2015.

19. Subsequent Event

On February 24, 2014, CRA entered into a new lease with BP Hancock LLC, as landlord, for the 9th and 10th floors (a total of 57,602 square feet) of the same office building at 200 Clarendon Street, Boston, Massachusetts in which CRA's Boston offices are currently located. The lease's base term will expire ten years from the date that CRA begins paying fixed rent under the lease and, subject to certain conditions, will be extendible by CRA for two five-year periods. The annual fixed rent for this office space (which does not include customary operating costs and expenses) will be $42 per square foot, or $2.4 million, for the first year of the lease's base term and will increase at the rate of $1.00 per square foot during the remainder of the lease's base term. The lease gives CRA a right of first refusal to rent certain additional office space in the office building if it becomes available. The performance of our obligations under the lease is secured by a $1 million letter of credit.

Concurrently with our entering into this new lease, CRA also entered into an amendment of its existing lease with BP Hancock LLC, as landlord, for the office space it currently rents in the office building described above, which currently expires on March 31, 2015. Except with respect to 25,099 square feet of office space covered by this lease, the amendment either extends the term of this lease to, or if prior to March 31, 2015 terminates this lease on, the day prior to the date that CRA begins paying fixed rent under the new lease described above. If the term of the existing lease is extended, the amendment provides that the base rent payable under this lease during the extension period will be $2.4 million per year.

CRA currently expects that the term of the new lease will commence, and the relocation of its Boston offices to the 9th and 10th floors of the office building at 200 Clarendon Street, Boston, Massachusetts will occur, sometime in the second quarter of fiscal 2015.