Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2022
Mar. 27, 2021
Jan. 01, 2022
Schedule of Equity Method Investments [Line Items]      
Cost of Sales $ 152,950 $ 99,531  
Reserve for inventory obsolescence 1,308   $ 1,295
VAT taxes 2,922   $ 4,057
Shipping and Handling      
Schedule of Equity Method Investments [Line Items]      
Cost of Sales $ 9,934 $ 7,104  
JIH Shareholders | Janus International Group, Inc.      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage 49.20%    
Janus Midco | Janus International Group, Inc.      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage 50.80%