CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 28, 2014	Dec. 29, 2013
Preferred Stock:
Par value (usd per share)	$ 0.001	$ 0.001
Shares authorized (in shares)	5,000,000us-gaap_PreferredStockSharesAuthorized	5,000,000us-gaap_PreferredStockSharesAuthorized
Shares outstanding (in shares)	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common Stock:
Par value (in dollars per share)	$ 0.001	$ 0.001
Shares authorized (in shares)	195,000,000us-gaap_CommonStockSharesAuthorized	195,000,000us-gaap_CommonStockSharesAuthorized
Shares issued (in shares)	57,801,978us-gaap_CommonStockSharesIssued	57,056,892us-gaap_CommonStockSharesIssued
Shares outstanding (in shares)	57,801,978us-gaap_CommonStockSharesOutstanding	57,056,892us-gaap_CommonStockSharesOutstanding

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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