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v3.23.2

Stock-Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 6 Months Ended |
--- | --- | ---
Jul. 01, 2023 | Jul. 02, 2022 | Dec. 31, 2022
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Unvested Number of shares | 323,000 |  | 217,000
Stock option granted, shares | 216,000 |  |
Stock-based compensation expense | $ 6,500 | $ 4,400 |
2023 Equity Incentive Plan [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Options Granted | 1,000,000 |  |
2019 and 2023 Equity Incentive Plan [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Stock option granted, shares | 8,867 |  |
Stock-based compensation expense | $ 700 |  |
2019 Plan [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Stock option granted, shares |  | 7,580 |
Stock-based compensation expense |  | $ 100 |
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 | 20,771 | 17,076 |
Weighted average price | $ 50.47 | $ 62.05 |
Share-based compensation expenses | $ 300 | $ 200 |
Ratio for additional common stock shares issued, under ESPP | 6 |  |
Monte Carlo Valuation Model [Member] | Minimum [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Vesting period | 1 year |  |
Monte Carlo Valuation Model [Member] | Maximum [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Vesting period | 2 years |  |
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] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Compensation expense | $ 4,400 | 4,000 |
Unvested Number of shares | 141,731 |  |
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% |  |
Employee Stock Option |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Recognized weighted average period (in years) | 4 months 24 days |  |
Unrecognized compensation cost related to the stock options | $ 700 |  |
Stock-based compensation expense | $ 1,100 | $ 100 |
Employee Stock Option | Monte Carlo Valuation Model [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Contractual term of stock options | 10 years |  |
Unvested options | 78,500 |  |
Vested unexercised options | 0 |  |
Exercise price per share | $ 50.6 |  |
Employee Stock Option | Black Scholes Valuation Model [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Contractual term of stock options | 10 years |  |
Unvested options | 4,999 |  |
Vested unexercised options | 19,234 |  |
Exercise prices per share, lower range limit | $ 35.04 |  |
Exercise prices per share, upper range limit | $ 55.03 |  |
Restricted Stock and Restricted Stock Units [Member] |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |
Total unrecognized compensation | $ 13,900 |  |
Recognized weighted average period (in years) | 2 years |  |

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