v3.20.4
Concentration of Credit Risks: (Details) - Hman Group holdings Inc and subsidiaries
12 Months Ended
Dec. 26, 2020
Dec. 28, 2019
Dec. 29, 2018
Concentration Risk [Line Items]      
Concentration Risk Percentage 10.00% 10.00% 10.00%
Accounts Receivable      
Concentration Risk [Line Items]      
Concentration Risk Percentage 45.10% 43.20%  
Revenue      
Concentration Risk [Line Items]      
Concentration Risk Percentage 49.10% 46.30%  
Lowe's | Revenue      
Concentration Risk [Line Items]      
Concentration Risk Percentage 22.50% 21.60% 22.00%
Home Depot | Revenue      
Concentration Risk [Line Items]      
Concentration Risk Percentage 26.50% 24.70% 21.80%