XML 66 R55.htm IDEA: XBRL DOCUMENT
v3.24.1.u1

Earnings Per Share - Additional Information (Details) - shares | 3 Months Ended
--- | ---
Mar. 30, 2024 | Apr. 01, 2023
Potentially dilutive shares excluded from earnings per share calculation | 114,000 | 120,000
Preferred Stock | Series A-1 |  |
Potentially dilutive shares excluded from earnings per share calculation | 176,230 |
Preferred stock convertible into common shares | 3,500,000 |
Preferred Stock | Series S |  |
Potentially dilutive shares excluded from earnings per share calculation | 100,000 |
Preferred stock convertible into common shares | 3,000,000 |

X
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
Name: | us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of common shares issuable upon conversion of preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-13 + Details
Name: | us-gaap_PreferredStockConvertibleSharesIssuable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_PreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesAPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=jan_SeriesSPreferredStocksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |