v3.21.1
Segment Reporting (Details)
 3 Months Ended 10 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
Mar. 27, 2021
USD ($)
segment
Mar. 31, 2020
USD ($)
Mar. 28, 2020
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2020
USD ($)
Dec. 26, 2020
USD ($)
segment
Dec. 31, 2019
USD ($)
Dec. 28, 2019
USD ($)
Dec. 29, 2018
USD ($)
Segment Reporting Information [Line Items]                    
Total income from operations $ (508,918)   $ 0   $ 0 $ (1,279,019)   $ 0    
Hman Group holdings Inc and subsidiaries                    
Segment Reporting Information [Line Items]                    
Number of Reportable segments | segment   3         3      
Total revenues   $ 341,281,000   $ 295,836,000     $ 1,368,295,000   $ 1,214,362,000 $ 974,175,000
Total income from operations   5,780,000   9,446,000     65,766,000   7,695,000 27,443,000
Hardware and Protective Solutions | Hman Group holdings Inc and subsidiaries                    
Segment Reporting Information [Line Items]                    
Total revenues   250,929,000   213,176,000     1,024,392,000   853,016,000 636,717,000
Total income from operations   6,050,000   8,853,000     67,313,000   14,204,000 18,555,000
Robotics and Digital Solutions | Hman Group holdings Inc and subsidiaries                    
Segment Reporting Information [Line Items]                    
Total revenues   55,879,000   56,308,000     209,287,000   236,086,000 196,043,000
Total income from operations   154,000   5,896,000     $ 3,177,000   $ 3,385,000 $ 17,705,000
Canada | Hman Group holdings Inc and subsidiaries                    
Segment Reporting Information [Line Items]                    
Total revenues   34,473,000   26,352,000            
Total income from operations   $ (424,000)   $ (5,303,000)