JanOne Inc. Quarterly report pursuant to Section 13 or 15(d)

Sale of ARCA and Connexx - Additional Information (Details) - Asset Purchase Agreement - ARCA and Connexx Sale - USD ($)	Nov. 14, 2021	Feb. 19, 2021
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Potential break fee receivable upon agreement termination		$ 250,000
Purchase price consideration receivable		25,000,000
Purchase price consideration receivable upon closing transaction with available funds		7,500,000
Purchase price consideration receivable upon closing transaction as promissory note		$ 17,500,000
Percentage of interest receivable on unpaid principal balance of promissory note		6.00%
Subsequent Event
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Break fee	$ 100,000
Installment	50,000
Maximum \| Subsequent Event
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Sale of subsidiaries	$ 25,000,000