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Note 9 - Intangible Assets - Finite Lived Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
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Jan. 02, 2021 | Dec. 28, 2019 | Dec. 29, 2018
Intangible Assets, gross | $ 138,297 | $ 134,380 |
Accumulated Amortization | (131,976) | (127,403) |
Intangible Assets, net | $ 6,321 | $ 6,977 | $ 11,900
Developed Technology [Member] |  |  |
Weighted Average Amortization (Year) | 5 years | 5 years |
Intangible Assets, gross | $ 110,987 | $ 110,987 |
Accumulated Amortization | (109,162) | (105,594) |
Intangible Assets, net | $ 1,825 | $ 5,393 |
Customer Relationships [Member] |  |  |
Weighted Average Amortization (Year) | 5 years 9 months 18 days | 5 years 9 months 18 days |
Intangible Assets, gross | $ 22,934 | $ 22,934 |
Accumulated Amortization | (22,281) | (21,400) |
Intangible Assets, net | $ 653 | $ 1,534 |
Licensed Technology [Member] |  |  |
Weighted Average Amortization (Year) | 6 years 7 months 6 days | 5 years |
Intangible Assets, gross | $ 4,376 | $ 459 |
Accumulated Amortization | (533) | (409) |
Intangible Assets, net | $ 3,843 | $ 50 |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 926 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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