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