Stock-Based Compensation - Schedule of Stock Option Plans Activity (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
Jun. 29, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at beginning of year, Shares	1,543
Granted, Shares	546
Exercised, Shares
Canceled, Shares
Outstanding at end of period, Shares	2,089
Options exercisable at end of period, Shares	242
Outstanding at beginning of year, Weighted - Average Exercise Price	$ 39.03
Granted, Weighted - Average Exercise Price	$ 44.51
Exercised, Weighted - Average Exercise Price
Canceled, Weighted - Average Exercise Price
Outstanding at end of period, Weighted - Average Exercise Price	$ 40.47
Options exercisable at end of period, Weighted - Average Exercise Price	$ 41.43
Outstanding at end of period, Weighted - Average Remaining Contractual Life	8 years 8 months 12 days
Options exercisable at end of period, Weighted - Average Remaining Contractual Life	6 years 10 months 24 days
Outstanding at end of period, Aggregate Intrinsic Value	$ 6,612
Options exercisable at June 29, 2013	$ 457

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Net number of share options (or share units) granted during the period.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Number of share options (or share units) exercised during the current period.

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