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Note 9 - Stock-based Compensation (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | ---
Oct. 01, 2022 | Oct. 02, 2021 | Oct. 01, 2022 | Oct. 02, 2021 | Oct. 01, 2022 | Oct. 02, 2021
Share-Based Payment Arrangement, Expense |  |  | $ 13,958 | $ 10,250 | $ 41,207 | $ 32,624
Restricted Stock Units (RSUs) [Member] | Chief Executive Officer [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) |  |  |  |  | 3 years |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved |  |  |  |  | 75.00% |
Share-Based Payment Arrangement, Expense | $ 5,500 | $ 4,000 |  |  | $ 18,400 | $ 15,300
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved |  |  |  |  | 75.00% |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Share-Based Payment Arrangement, Tranche Two [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions |  |  |  |  | 100.00% |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved |  |  |  |  | 55.00% |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Share-Based Payment Arrangement, Tranche Three [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions |  |  |  |  | 200.00% |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved |  |  |  |  | 25.00% |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 0.00% |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Minimum [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved | 200.00% |  |  |  |  |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Minimum [Member] | TSR Relative To PHLX Semiconductor Sector Index, 75th Percentile [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions |  |  |  |  | 250.00% |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Minimum [Member] | Share-Based Payment Arrangement, Tranche Three [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved |  |  |  |  | 25.00% |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Maximum [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved | 250.00% |  |  |  |  |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Maximum [Member] | TSR Relative To PHLX Semiconductor Sector Index, 75th Percentile [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions |  |  |  |  | 200.00% |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Maximum [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved |  |  |  |  | 250.00% |
Restricted Stock Units (RSUs) [Member] | Executive Officer [Member] | Maximum [Member] | Share-Based Payment Arrangement, Tranche Three [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Of Market Condition Achieved |  |  |  |  | 75.00% |
Performance Shares Granted in 2018 [Member] | Executive Officer [Member] | Minimum [Member] | Share-Based Payment Arrangement, Tranche One [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage, Based on Market Conditions |  |  |  |  | 200.00% |
Performance Shares [Member] | Share-Based Payment Arrangement, Tranche Four [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 40.00% |
Performance Shares [Member] | Share-Based Payment Arrangement, Tranche Five [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 40.00% |
Performance Shares [Member] | Share-Based Payment Arrangement, Tranche Six [Member] |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage |  |  |  |  | 70.00% |

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- Definition The percentage of market condition achieved for awards to vest under share based payment arrangement. + References No definition available. + Details
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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