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

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Income Tax Contingency [Line Items]
Income tax (benefit) expense	$ (75)	$ (227)
Effective tax rate (percent)	3.40%	22.90%
Discontinued Operations
Income Tax Contingency [Line Items]
Income tax (benefit) expense	$ 0	$ 3,200

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.