Summary of Significant Accounting Policies (Assets and Liabilities Measured at Fair Value) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 25, 2020
ASSETS
Total assets at fair value	$ 23,147	$ 19,903
Liabilities [Abstract]
Total liabilities at fair value	18,347	14,553
Level 2
ASSETS
Cash surrender value of life insurance	23,147	19,887
Forward exchange contracts	0	16
Liabilities [Abstract]
Deferred Compensation	5,962	5,099
Forward exchange contracts	111	0
Level 3
Liabilities [Abstract]
Contingent consideration	$ 12,274	$ 9,454