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Stock-Based Compensation - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	May 12, 2020	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		$ 1,877	$ 1,914	$ 3,516	$ 3,467
Unrecognized compensation expense related to stock awards		$ 8,409		$ 8,409
Recognition period				1 year 10 months 24 days
Share-based Payment Arrangement, Nonemployee | Director | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units granted	8,340
Aggregate grant date fair value	$ 676

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

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