Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

v3.22.0.1
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jan. 01, 2022
Dec. 26, 2020
Nov. 12, 2021
Schedule of Equity Method Investments [Line Items]      
Cost of sales $ 498,787 $ 345,150  
Advertising expense 2,004 1,326  
Reserve for inventory obsolescence 1,295 1,964  
VAT taxes 3,906 3,444  
Deferred finance fees 4,321 0  
Warrant redemption price (in dollars per share)     $ 0.10
U.S.      
Schedule of Equity Method Investments [Line Items]      
Cash in excess of insured limits 10,226 28,102  
Non-U.S.      
Schedule of Equity Method Investments [Line Items]      
Cash in excess of insured limits 2,272 6,329  
Cash 4,832 8,366  
Shipping and Handling      
Schedule of Equity Method Investments [Line Items]      
Cost of sales $ 35,241 $ 24,061  
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%