v3.21.1
Long-Term Debt: - Summarized Financial Information Of Trust (Details) - USD ($)
Mar. 31, 2021
Mar. 27, 2021
Dec. 31, 2020
Dec. 26, 2020
Mar. 31, 2020
Mar. 28, 2020
Dec. 31, 2019
Dec. 28, 2019
Dec. 31, 2018
Dec. 29, 2018
Mar. 13, 2018
Dec. 30, 2017
Variable Interest Entity [Line Items]                        
Total assets $ 500,656,732   $ 501,201,868       $ 0          
Stockholder's equity - trust common securities 5,000,010   5,000,010   $ 0   0   $ 0   $ 0  
Total liabilities and stockholder's equity $ 500,656,732   $ 501,201,868       $ 0          
Hman Group holdings Inc and subsidiaries                        
Variable Interest Entity [Line Items]                        
Total assets   $ 2,519,633,000   $ 2,468,618,000       $ 2,437,983,000   $ 2,428,243,000    
Stockholder's equity - trust common securities   361,474,000   364,587,000   $ 349,097,000   373,969,000   450,067,000   $ 527,403,000
Total liabilities and stockholder's equity   $ 2,519,633,000   2,468,618,000       $ 2,437,983,000   $ 2,428,243,000    
Hman Group holdings Inc and subsidiaries | The Hillman Group Capital Trust ("Trust")                        
Variable Interest Entity [Line Items]                        
Non-current assets - junior subordinated debentures - preferred       120,034,000                
Non-current assets - junior subordinated debentures - common       3,261,000                
Total assets       123,295,000                
Non-current liabilities - trust preferred securities       120,034,000                
Stockholder's equity - trust common securities       3,261,000                
Total liabilities and stockholder's equity       $ 123,295,000