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Stock-Based Compensation - Schedule of stock options outstanding and exercisable (Details) | 12 Months Ended
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Jan. 02, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Outstanding options | shares | 2,170,780
Weighted- average remaining contractual life (years) | 5 years 10 months 20 days
Weighted-average exercise price | $ 6.95
Exercisable options | shares | 1,615,793
Weighted- average exercise price | $ 7.72
Exercise Price Range 1 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Exercise price range Low | 3.25
Exercise price range High | $ 4.72
Outstanding options | shares | 232,232
Weighted- average remaining contractual life (years) | 6 years 4 months 17 days
Weighted-average exercise price | $ 3.40
Exercisable options | shares | 177,524
Weighted- average exercise price | $ 3.28
Exercise Price Range 2 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Exercise price range Low | 4.73
Exercise price range High | $ 4.94
Outstanding options | shares | 484,944
Weighted- average remaining contractual life (years) | 9 years 6 months 7 days
Weighted-average exercise price | $ 4.73
Exercisable options | shares | 0
Weighted- average exercise price | $ 0
Exercise Price Range 3 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Exercise price range Low | 4.95
Exercise price range High | $ 7.09
Outstanding options | shares | 486,955
Weighted- average remaining contractual life (years) | 3 years 9 months 3 days
Weighted-average exercise price | $ 6.12
Exercisable options | shares | 483,955
Weighted- average exercise price | $ 6.12
Exercise Price Range 4 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Exercise price range Low | 7.10
Exercise price range High | $ 9.48
Outstanding options | shares | 317,967
Weighted- average remaining contractual life (years) | 4 years 2 months 19 days
Weighted-average exercise price | $ 7.98
Exercisable options | shares | 305,632
Weighted- average exercise price | $ 7.99
Exercise Price Range 5 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Exercise price range Low | 9.49
Exercise price range High | $ 13.86
Outstanding options | shares | 648,682
Weighted- average remaining contractual life (years) | 5 years 4 months 28 days
Weighted-average exercise price | $ 9.99
Exercisable options | shares | 648,682
Weighted- average exercise price | $ 9.99

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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