Note 13 - Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
Jan. 01, 2022	Jan. 02, 2021	Dec. 28, 2019
Statutory federal rate	21.00%	21.00%	21.00%
State taxes, net	(4.00%)	(4.00%)	3.00%
Federal tax credits	(3.00%)	(3.00%)	3.00%
Excess tax benefit for stock compensation	(8.00%)	(10.00%)	(6.00%)
Foreign rate differential	(14.00%)	(12.00%)	(2.00%)
U.S. tax on foreign operations	3.00%	15.00%
Foreign withholding taxes	1.00%	3.00%	3.00%
Capital loss expiration	3.00%		1.00%
Other deferred tax asset adjustment		3.00%
Valuation allowance	8.00%	(13.00%)	(19.00%)
Change in uncertain tax benefit accrual	(5.00%)	2.00%	0.00%
Effective income tax rate	2.00%	2.00%	4.00%

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Percentage of foreign withholding taxes computed under the effective income tax rate reconciliation.

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Percentage 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 U.S. tax on foreign operations, percent.

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 12
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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage 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 applicable to statutory income tax expense (benefit) outside of the country of domicile.

+ References

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Percentage 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 operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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Percentage 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 applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).

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