v3.20.4
Commitments and Contingencies: (Details) - Hman Group holdings Inc and subsidiaries
$ in Thousands
12 Months Ended
Dec. 26, 2020
USD ($)
item
Dec. 28, 2019
USD ($)
Dec. 29, 2018
USD ($)
Aug. 31, 2020
item
Jun. 23, 2020
item
Apr. 14, 2020
item
Jul. 25, 2019
item
Loss Contingencies [Line Items]              
Number of risk areas that involve the most significant accounting estimates | item 2            
Insurance for product liability, automotive, workers' compensation, and general liability losses              
Loss Contingencies [Line Items]              
Self insurance amount per occurrence $ 250            
General liability losses per occurrence 500            
Outstanding letters of credit 23,590            
Insurance for workers' compensation and automotive liability              
Loss Contingencies [Line Items]              
Risk insurance reserves 2,488            
Group health insurance              
Loss Contingencies [Line Items]              
Risk insurance reserves 2,609            
Maximum annual stop loss limit per participant 250            
Patent Infringement Case Against KeyMe [Member]              
Loss Contingencies [Line Items]              
Number of motions filed by the defendant | item       2     2
Number of patents-in-suit | item         3    
Number of patent cases to be consolidated | item           2  
Loss contingency for anti-dumping duty and countervailing duty laws              
Loss Contingencies [Line Items]              
Liability for loss contingencies 2,446            
Income from loss contingencies     $ 3,829        
Expenses from loss contingencies 0 $ 0          
Minimum              
Loss Contingencies [Line Items]              
Catastrophic coverage 250            
Maximum              
Loss Contingencies [Line Items]              
Catastrophic coverage $ 60,000