Share-based Compensation - Stock Option Vesting Schedule (Details) - USD ($) $ / shares in Units, $ in Thousands	8 Months Ended	12 Months Ended
Sep. 10, 2016	Jan. 02, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of shares authorized	1,902,077
Number of shares available for grant	553,970
Number of Options Outstanding
Options outstanding at January 2, 2016 (in shares)	534,428
Exercised (in shares)	(2,202)
Options outstanding at September 10, 2016 (in shares)	532,226	534,428
Weighted Average Exercise Price
Options outstanding at January 2, 2016 (in USD per share)	$ 10.97
Exercised (in USD per share)	12.35
Options outstanding at September 10, 2016 (in USD per share)	$ 10.98	$ 10.97
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value as of Date Listed
Weighted average remaining contractual term (in years)	1 year 7 months 21 days	2 years 4 months 2 days
Aggregate intrinsic value as of date listed	$ 942	$ 224

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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

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

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