v3.26.1
Segments Information - Schedule of Summarized Financial Information (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jul. 04, 2026
USD ($)
Apr. 04, 2026
USD ($)
Jun. 28, 2025
USD ($)
Mar. 29, 2025
USD ($)
Jul. 04, 2026
USD ($)
segment
Jun. 28, 2025
USD ($)
Jan. 03, 2026
USD ($)
Segment Reporting [Line Items]              
Number of operating segments | segment         2    
Number of reportable segments | segment         2    
Total revenues $ 233.5   $ 228.1   $ 456.2 $ 438.6  
Cost of revenues 153.2   134.9   300.7 263.5  
GROSS PROFIT 80.3   93.2   155.5 175.1  
Other segment items (40.1)   (44.2)   (82.3) (87.7)  
Adjusted EBITDA 40.2   49.0   73.2 87.4  
NET INCOME 10.7 $ 0.2 20.7 $ 10.8 10.9 31.5  
Interest, net 7.4   9.1   15.5 19.3  
Income taxes 2.4   6.4   4.7 11.0  
Depreciation and amortization 15.6   11.2   31.2 22.4  
Restructuring & other Adjusted EBITDA adjustments 4.1   1.6   10.9 3.2  
Depreciation expense - cost of revenues 2.5   2.1   4.9 4.1  
Depreciation expense - operating expenses 1.1   0.9   2.3 1.8  
Consolidated amortization expense 12.0   8.2   24.0 16.5  
Consolidated purchases of property, plant, and equipment 2.8   6.5   5.6 13.2  
Consolidated identifiable assets 1,311.0       1,311.0   $ 1,305.0
Product revenues              
Segment Reporting [Line Items]              
Total revenues 197.9   190.9   386.7 366.6  
Cost of revenues 129.1   108.6   254.3 213.3  
Service revenues              
Segment Reporting [Line Items]              
Total revenues 35.6   37.2   69.5 72.0  
Cost of revenues 24.1   26.3   46.4 50.2  
Janus International              
Segment Reporting [Line Items]              
Total revenues     28.4     49.6  
Janus International | Product revenues              
Segment Reporting [Line Items]              
Total revenues     28.3     49.4  
Janus International | Service revenues              
Segment Reporting [Line Items]              
Total revenues     0.1     0.2  
Operating Segments | Janus North America              
Segment Reporting [Line Items]              
Total revenues 202.9   200.3   398.8 391.0  
Cost of revenues 130.6   115.0   256.8 228.3  
GROSS PROFIT 72.3   85.3   142.0 162.7  
Other segment items (35.9)   (40.5)   (74.1) (81.0)  
Adjusted EBITDA 36.4   44.8   67.9 81.7  
Depreciation expense - cost of revenues 2.1   1.8   4.1 3.5  
Depreciation expense - operating expenses 1.1   0.8   2.2 1.6  
Consolidated amortization expense 11.7   7.9   23.4 15.9  
Consolidated purchases of property, plant, and equipment 2.7   6.2   5.4 12.9  
Consolidated identifiable assets 1,229.3       1,229.3   1,231.7
Operating Segments | Janus North America | Product revenues              
Segment Reporting [Line Items]              
Total revenues 167.7   163.2   329.9 319.2  
Operating Segments | Janus North America | Service revenues              
Segment Reporting [Line Items]              
Total revenues 35.2   37.1   68.9 71.8  
Operating Segments | Janus International              
Segment Reporting [Line Items]              
Total revenues 31.1   28.4   58.4 49.6  
Cost of revenues 23.1   20.5   44.9 37.2  
GROSS PROFIT 8.0   7.9   13.5 12.4  
Other segment items (4.2)   (3.7)   (8.2) (6.7)  
Adjusted EBITDA 3.8   4.2   5.3 5.7  
Depreciation expense - cost of revenues 0.4   0.3   0.8 0.6  
Depreciation expense - operating expenses 0.0   0.1   0.1 0.2  
Consolidated amortization expense 0.3   0.3   0.6 0.6  
Consolidated purchases of property, plant, and equipment 0.1   0.3   0.2 0.3  
Consolidated identifiable assets 81.7       81.7   $ 73.3
Operating Segments | Janus International | Product revenues              
Segment Reporting [Line Items]              
Total revenues 30.7   28.3   57.8 49.4  
Operating Segments | Janus International | Service revenues              
Segment Reporting [Line Items]              
Total revenues 0.4   0.1   0.6 0.2  
Intersegment eliminations              
Segment Reporting [Line Items]              
Total revenues (0.5)   (0.6)   (1.0) (2.0)  
Cost of revenues (0.5)   (0.6)   (1.0) (2.0)  
Intersegment eliminations | Product revenues              
Segment Reporting [Line Items]              
Total revenues $ (0.5)   $ (0.6)   $ (1.0) $ (2.0)