INCOME TAXES - Schedule of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jan. 01, 2017	Jan. 03, 2016
Deferred tax assets:
Net operating losses	$ 53,924	$ 45,148
Capital losses	2,938	2,938
Accruals and reserves	1,875	1,732
Credits carryforward	5,080	5,831
Depreciation and amortization	14,415	12,738
Stock-based compensation	968	1,012
Deferred tax assets, gross	79,200	69,399
Valuation allowances	(79,150)	(69,349)
Deferred tax asset	50	50
Deferred tax liability	$ 0	$ 0

Deferred Tax Assets, Operating Losses and Capital Losses Carryforwards

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, before jurisdictional netting.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other reserves and accruals not separately disclosed.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, before jurisdictional netting.

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