Face amount per share of no-par value common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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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 per share of no-par value preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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Shareholders' Equity - Summary of Share Count and Par Value Data Related to Shareholders' Equity (Details) (USD $)	Mar. 29, 2015	Dec. 31, 2014	Mar. 30, 2014	Dec. 31, 2013
Preferred Stock
Preferred stock, par value per share
Preferred stock, shares authorized	25,000,000us-gaap_PreferredStockSharesAuthorized	25,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares outstanding	0us-gaap_PreferredStockSharesOutstanding	0us-gaap_PreferredStockSharesOutstanding
Common Stock
Common stock, par value per share
Common stock, shares authorized	75,000,000us-gaap_CommonStockSharesAuthorized	75,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	56,176,739us-gaap_CommonStockSharesIssued	56,101,700us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	33,302,247us-gaap_CommonStockSharesOutstanding	33,392,060us-gaap_CommonStockSharesOutstanding	33,802,386us-gaap_CommonStockSharesOutstanding	33,558,864us-gaap_CommonStockSharesOutstanding
Treasury stock
Treasury stock, shares held	22,874,492us-gaap_TreasuryStockShares	22,709,640us-gaap_TreasuryStockShares