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Share-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Apr. 23, 2021 | Apr. 04, 2021 | Jul. 03, 2022 | Jul. 04, 2021 | Jul. 03, 2022 | Jul. 04, 2021 | Jan. 02, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Shares available for issuance (in shares) |  |  | 5,150,000 |  | 5,150,000 |  |
Annual increase of number of shares reserved for issuance (in shares) |  |  | 150,000 |  | 150,000 |  |
Annual percent increase of number of shares reserved for issuance |  |  | 3.00% |  | 3.00% |  |
Number of stock options granted (in shares) |  |  |  |  | 549,000 |  |
Share-based compensation expense |  |  | $ 2,043 | $ 6,539 | $ 5,050 | $ 6,544 |
Weighted average grant-date fair value of options granted |  |  |  |  | $ 5.37 |  |
Share-based Payment Arrangement, Tranche One |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of stock options granted (in shares) |  |  |  |  |  | 343,000 |
Share-based Payment Arrangement, Tranche Two |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Number of stock options granted (in shares) |  |  |  |  |  | 744,000 |
Options |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expiration period of options granted |  |  |  |  | 10 years |  |
Share-based compensation expense |  |  | 410 | 439 | $ 832 | $ 444 |
Unrecognized compensation cost |  |  | 4,939 |  | $ 4,939 |  |
Weighted average period of recognition for unrecognized compensation cost |  |  |  |  | 3 years 2 months 15 days |  |
Options | Share-based Payment Arrangement, Tranche One |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expiration period of options granted |  |  |  |  |  | 15 months |
Options | Share-based Payment Arrangement, Tranche Two |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Expiration period of options granted |  |  |  |  |  | 10 years |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation expense |  |  | 1,411 | $ 6,100 | $ 3,791 | $ 6,100 |
Unrecognized compensation cost |  |  | 6,585 |  | $ 6,585 |  |
Weighted average period of recognition for unrecognized compensation cost |  |  |  |  | 1 year 8 months 4 days |  |
Units granted (in shares) |  |  |  |  | 294,000 | 205,000 |
RSUs vested (in shares) |  |  |  |  | 991,000 | 0 |
Restricted Stock Units (RSUs) | Directors |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Units granted (in shares) |  |  |  |  | 115,000 |  |
Restricted Stock Units (RSUs) | Eligible Employees And Directors |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Units granted (in shares) |  |  |  |  |  | 441,000 |
Employee Stock |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based compensation expense |  |  | 223 |  | $ 427 |  |
Unrecognized compensation cost |  |  | $ 149 |  | $ 149 |  |
Common stock reserved for ESPP issuance (in shares) | 707,000 |  |  |  |  |  |
Percentage of earnings applied to purchase of stock under ESPP | 15.00% |  |  |  |  |  |
Shares available for purchase by an employee at each offering period (in shares) |  | 2,500 |  |  |  |  |
Shares available for purchase by an employee at each offering period (in shares) |  |  |  |  | 79,000 |  |
Amount withheld on behalf employees for future purchases |  |  |  |  | $ 889 |  | $ 937
Employee Stock | Maximum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Percentage of fair value of shares at grant date to determine purchase price | 15.00% |  |  |  |  |  |
Offering period |  | 27 months |  |  |  |  |
Employee Stock | Minimum |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Offering period |  | 6 months |  |  |  |  |

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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 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. + 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 (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + 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 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + 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 (c)(1)(iv)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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