INCOME TAXES - Income Tax Reconciliation (Details) - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
Jan. 03, 2021	Aug. 28, 2020	Jan. 02, 2022	Dec. 29, 2019
Income Tax Disclosure [Abstract]
Federal statutory rate (21%)	$ (22,715)	$ 1,552	$ 3,378	$ (2,146)
State income taxes, net of federal benefit	393	641	6,440	1,755
Pre-transaction loss of Utz Brands Holdings, LLC	0	1,752	0	4,204
Investment in Utz Brands, LLC, Operations	(23,844)	0	(31)	0
Noncontrolling interest in Utz Brands Holdings, LLC	1,497	0	2,448	0
Valuation allowance	25,121	0	5,195	(683)
Remeasurement of warrant liability	19,288	0	(7,702)	0
Return to provision	0	0	(771)	0
Permanent book to tax differences	0	0	(593)	0
Credits	0	0	(239)	0
IRC §162(m)	0	0	191	0
Nondeductible expenses	0	8	12	6
Other	(7)	20	(242)	10
Total	$ (267)	$ 3,973	$ 8,086	$ 3,146

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

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations attributable to deduction. Includes, but is not limited to, dividend deduction, deduction for dividend paid to employee stock ownership plan (ESOP), Medicare prescription drug benefit subsidy deduction, and other deductions.

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