Stock-Based Compensation (Details) - USD ($) $ in Thousands, shares in Millions	3 Months Ended	9 Months Ended
Sep. 29, 2020	Oct. 01, 2019	Sep. 29, 2020	Oct. 01, 2019
Share-based Payment Arrangement [Abstract]
Shares awards available to be granted (in shares)	2.9		2.9
Stock-based compensation expense	$ 708	$ (61)	$ 1,960	$ 1,820
Capitalized stock-based compensation expense	$ 12	$ 11	$ 50	$ 32

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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-Name Accounting Standards Codification
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Amount of cost capitalized for award under share-based payment arrangement.

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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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