Stock-Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
Jul. 02, 2022	Jul. 03, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option granted, shares	96,000
Stock-based compensation expense	$ 4,372	$ 4,183
2012 Nonemployee Director Fees Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option granted, shares		14,250
Stock-based compensation expense		$ 1,043
2019 Equity Incentive Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option granted, shares	7,580
Stock-based compensation expense	$ 139
Employee Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Rate of common stock at market value	85.00%
Employee Stock Purchase Plan and U.K. Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares purchased by employees	17,076	14,918
Weighted average price	$ 62.05	$ 53.37
Share-based compensation expenses	$ 183	$ 311
Ratio for additional common stock shares issued, under ESPP	6
Time Based [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Performance Based [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
RSUs [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target amount percentage	0.00%
RSUs [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Target amount percentage	200.00%
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Recognized weighted average period (in years)	1 year 6 months
Contractual term of stock options	10 years
Unrecognized compensation cost related to the stock options	$ 198
Unvested options	13,222
Vested unexercised options	11,011
Exercise prices per share, lower range limit	$ 35.04
Exercise prices per share, upper range limit	$ 55.30
Restricted Stock and Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation expense	$ 3,978	$ 2,796
Total unrecognized compensation	$ 11,269
Recognized weighted average period (in years)	2 years

Employee Stock Purchase Plan Issue Of Additional Common Stock Shares Ratio

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Purchased

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

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Amount of expense for employee benefit and equity-based compensation.

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

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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 option under share-based payment arrangement.

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Amount of noncash expense for share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Discount rate from fair value on purchase date that participants pay for shares.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Per share weighted-average price paid for shares purchased on open market for issuance under share-based payment arrangement.

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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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Percentage of vesting of award under share-based payment arrangement.

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Number of non-vested options outstanding.

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Number of options vested.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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