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Intangible Assets (Schedule Of Finite And Indefinite Lived Intangible Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Schedule Of Finite and Indefinite Intangible Assets [Line Items]
Amortized intangible assets, Net carrying amount	$ 3,982
Total, Gross carrying amount	38,009	$ 38,674
Total, Net carrying amount	29,840	31,811
Trade Name And Trademarks [Member]
Schedule Of Finite and Indefinite Intangible Assets [Line Items]
Amortized intangible assets, Gross carrying amount	3,791	3,858
Amortized intangible assets, Accumulated amortization	(3,548)	(3,226)
Amortized intangible assets, Net carrying amount	$ 243	$ 632
Weighted-average amortization period (years)	10 years	10 years
Product Formulas [Member]
Schedule Of Finite and Indefinite Intangible Assets [Line Items]
Amortized intangible assets, Gross carrying amount	$ 8,360	$ 8,506
Amortized intangible assets, Accumulated amortization	(4,621)	(3,637)
Amortized intangible assets, Net carrying amount	$ 3,739	$ 4,869
Weighted-average amortization period (years)	8 years	8 years
Direct Sales License [Member]
Schedule Of Finite and Indefinite Intangible Assets [Line Items]
Indefinite-lived intangible assets, Gross carrying amount	$ 25,858	$ 26,310

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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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

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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

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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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://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

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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Paragraph 2
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-Topic 350
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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Schedule Of Finite and Indefinite Intangible Assets [Line Items]

+ References

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