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Stockholders' Equity - Schedule of Exercise Price for Stock Options Outstanding and Exercisable Outstanding (Details) | 12 Months Ended
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Jan. 02, 2021 $ / shares shares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of Options, Outstanding | 113,900
Number of Options, Exercisable | 65,400
$17.35 to $23.45 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of Options, Outstanding | 16,500
Number of Options, Exercisable | 16,500
Exercise Price, Lower Range Limit | $ / shares | $ 17.35
Exercise Price, Upper Range Limit | $ / shares | $ 23.45
$11.10 to $15.00 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of Options, Outstanding | 5,400
Number of Options, Exercisable | 5,400
Exercise Price, Lower Range Limit | $ / shares | $ 11.10
Exercise Price, Upper Range Limit | $ / shares | $ 15.00
$5.70 to $9.90 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of Options, Outstanding | 12,000
Number of Options, Exercisable | 12,000
Exercise Price, Lower Range Limit | $ / shares | $ 5.70
Exercise Price, Upper Range Limit | $ / shares | $ 9.90
$3.54 to $5.25 |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Number of Options, Outstanding | 80,000
Number of Options, Exercisable | 31,500
Exercise Price, Lower Range Limit | $ / shares | $ 3.54
Exercise Price, Upper Range Limit | $ / shares | $ 5.25

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- Definition 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. + References No definition available. + 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 The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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)(iii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition 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. + 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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