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Transactions with Related Parties (Narrative) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Mar. 27, 2020
Jun. 28, 2019
Mar. 29, 2019
Sep. 25, 2020
Related Party Transaction [Line Items]        
Total cost $ 1,006 $ 1,440 $ 1,616  
Director [Member]        
Related Party Transaction [Line Items]        
Repurchase of common stock       37
Total cost       $ 700
Purchase price per share       $ 17.43