Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

v3.22.0.1
Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 26, 2021
Dec. 27, 2020
Income Tax Contingency [Line Items]    
Deferred Tax Assets, Tax Credit Carryforwards, General Business $ 25,200 $ 23,331
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%  
Minimum    
Income Tax Contingency [Line Items]    
Loss Contingency, Estimate of Possible Loss $ 500  
Maximum    
Income Tax Contingency [Line Items]    
Loss Contingency, Estimate of Possible Loss $ 2,500