Employee Benefit Plans - Stock Option Activity (Details) (Stock Option Awards, USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Jan. 03, 2015
Stock Option Awards
Number of Shares
Options Outstanding, Beginning Balance	393
Exercised	(19)
Options Outstanding, Ending Balance	374
Vested and Unvested Expected to Vest, End of Year	374
Options Exercisable, End of Year	284
Weighted Average Exercise Price
Options Outstanding, Beginning Balance (in dollars)	$ 20.82
Exercised (in dollars)	$ 17.68
Options Outstanding, Ending Balance (in dollars)	$ 20.98
Vested and Unvested Expected to Vest, End of Year (in dollars)	$ 20.98
Options Exercisable, End of Year (in dollars)	$ 19.81
Additional Information:
Weighted average remaining contractual life, options outstanding at end of year	6 years 7 months 6 days
Weighted average remaining contractual life, vested and unvested expected to vest, end of year	6 years 7 months 6 days
Weighted average remaining contractual life, options exercisable, end of year	6 years 1 month 6 days
Aggregate intrinsic value, options outstanding at end of year	$ 7,842
Aggregate intrinsic value, vested and unvested expected to vest end of year	7,842
Aggregate intrinsic value, options exercisable, end of year	$ 5,629

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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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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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

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