Quarterly report pursuant to Section 13 or 15(d)

Nature of Operations (Details)

v3.22.1
Nature of Operations (Details)
$ in Thousands
3 Months Ended
Apr. 02, 2022
USD ($)
segment
Mar. 27, 2021
USD ($)
Jan. 01, 2022
USD ($)
Aug. 31, 2021
Aug. 18, 2021
Jan. 18, 2021
Jan. 02, 2020
Schedule of Equity Method Investments [Line Items]              
Number of reportable segments | segment 2            
Assets $ 1,198,708 $ 898,746 $ 1,122,002        
Revenue 229,520 152,824          
Non-U.S.              
Schedule of Equity Method Investments [Line Items]              
Assets 64,422   $ 58,439        
Revenue $ 17,914 $ 12,560          
G & M Stor-More Pty Ltd              
Schedule of Equity Method Investments [Line Items]              
Interest acquired           100.00%  
DBCI, LLC              
Schedule of Equity Method Investments [Line Items]              
Interest acquired         100.00%    
Access Control Technologies, LLC              
Schedule of Equity Method Investments [Line Items]              
Interest acquired       100.00%      
Janus International Europe Holdings Ltd. (UK) | Janus International Europe Ltd. (UK)              
Schedule of Equity Method Investments [Line Items]              
Ownership percentage 100.00%            
Janus International Europe Holdings Ltd. (UK) | Active Supply & Design (CDM) Ltd. (UK)              
Schedule of Equity Method Investments [Line Items]              
Ownership percentage 100.00%            
Janus International Europe Holdings Ltd. (UK) | Steel Storage Australia & Steel Storage Asia              
Schedule of Equity Method Investments [Line Items]              
Ownership percentage 100.00%            
Janus International Europe Holdings Ltd. (UK) | Steel Storage Australia & Steel Storage Asia              
Schedule of Equity Method Investments [Line Items]              
Interest acquired             100.00%
Janus Cobb Holdings, LLC | Asta Industries, Inc.              
Schedule of Equity Method Investments [Line Items]              
Ownership percentage 100.00%            
Janus Cobb Holdings, LLC | Nokē, Inc.              
Schedule of Equity Method Investments [Line Items]              
Ownership percentage 100.00%