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Subsequent Event	12 Months Ended
	Jan. 03, 2015
Subsequent Event
Subsequent Event	18.   Subsequent Event         On February 24, 2015, CRA entered into an amendment to its lease with BP Hancock LLC for the office space it rents in the building at 200 Clarendon Street, Boston, Massachusetts. Under this amendment, CRA will lease an additional 10,057 square feet of office space on the twenty-fifth floor of this building, at an annual rate (excluding customary operating costs and expenses) of $49 per square foot, for a term beginning on June 15, 2015 (or, if later, when landlord completes certain improvements to the space) and ending on June 30, 2020, with the option to extend this term for an additional three-year period.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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