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Cash and Cash Equivalents	9 Months Ended
	Oct. 03, 2015
Cash and Cash Equivalents
Cash and Cash Equivalents	5. Cash and Cash Equivalents         Cash equivalents consist principally of securities with a maturity of three months or less when purchased and are stated at amortized cost, which approximates fair value. Investments in money market mutual fund shares are held at net asset value, which approximates fair value.. As of October 3, 2015, a substantial portion of CRA's cash accounts was concentrated at a single financial institution, which potentially exposes CRA to credit risks. The financial institution has a short-term credit rating of A-2 by Standard & Poor's ratings services. CRA has not experienced any losses related to such accounts. CRA does not believe that there is significant risk of non-performance by the financial institution, and the cash on deposit is fully liquid. CRA continually monitors the credit ratings of this institution.

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The entire disclosure of the components of cash, cash equivalents, and short-term investments. Short-term investments may include current marketable securities.

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