Stock-Based Compensation - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Dec. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, options outstanding (shares)	969,447	1,030,866
Common stock, options vested (shares)	623,588
Common stock, options unvested (shares)	345,859
Aggregate intrinsic value of options outstanding	$ 5,884
Unvested restricted shares outstanding (shares)	736,163	742,404
Premium Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, options outstanding (shares)	260,967
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 900
Unrecognized compensation expense, recognition period	1 year 9 months 7 days
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, recognition period	2 years 6 months 29 days
Unvested restricted shares outstanding (shares)	652,027
Unrecognized compensation expense	$ 5,600
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, recognition period	2 years 1 month 9 days
Unvested restricted shares outstanding (shares)	36,058
Unrecognized compensation expense	$ 100
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 300
Unrecognized compensation expense, recognition period	1 year 1 month 9 days
Unvested restricted shares outstanding (shares)	48,078

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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-Publisher FASB
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-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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Number of non-vested options outstanding.

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Number of options vested.

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