INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Income Tax Disclosure [Abstract]
Corporate income tax rate	21.00%	21.00%	21.00%
Unremitted earnings of foreign subsidiaries	$ 6,900
Texas research and development tax credit carryforwards	1,900
Unrecognized tax benefits	7,250	$ 3,358	$ 2,381
Liability of interest and penalties related to unrecognized tax benefits	$ 600

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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Amount of unrecognized tax benefits.

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Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research and development tax credit carryforwards.

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