Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Narrative) (Details)

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Intangible Assets (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Intangible Assets [Abstract]      
Goodwill impairment $ 0 $ 0 $ 0
Impairment of indefinite-lived intangible assets 0 0 0
Aggregate amortization of intangible assets $ 1,442,000 $ 1,505,000 $ 1,480,000