v3.26.3
SEGMENT REPORTING - Segment Reporting Information, by Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Dec. 31, 2024
Segment Reporting [Line Items]            
Net sales $ 0.0 $ 0.0 $ 0.0 $ 59.8    
Depreciation and amortization     0.0 (1.6)    
Income tax (expense) benefit 7.0 (29.8) 2.2 (55.0)    
Interest expense, net 0.0 0.0 0.0 (1.7)    
Loss on remeasurement of TRA liability 0.0 0.0 (28.1) 0.0    
Net income (loss) 76.0 (174.7) (108.7) (179.3)    
Total cash 5.5 127.4 5.5 127.4 $ 114.6 $ 77.5
Total assets 3,543.5 505.5 3,543.5 505.5 $ 517.3  
Other            
Segment Reporting [Line Items]            
Total cash (163.9) 30.2 (163.9) 30.2    
Total assets (2,616.8) 224.7 (2,616.8) 224.7    
Operating Segments            
Segment Reporting [Line Items]            
Net sales 509.6 120.9 1,390.6 344.3    
Material 155.4 20.2 419.8 59.7    
Personnel 128.1 30.3 388.7 88.8    
Overhead 47.5 11.7 128.5 37.0    
Professional fees 9.7 3.1 23.8 11.5    
Management fees 13.8 3.7 40.3 8.2    
Sales and marketing 3.1 0.2 12.8 0.8    
Other segment expenses 2.0 1.9 17.8 4.0    
Adjusted EBITDA 150.0 49.8 358.9 134.3    
Corporate Adjusted EBITDA (3.7) (2.1) (13.7) (5.5)    
Depreciation and amortization (32.6) (2.3) (156.2) (6.9)    
Stock-based compensation (6.6) (5.8) (16.7) (16.6)    
Income tax (expense) benefit 5.0 (29.8) (25.1) (55.0)    
Interest expense, net (32.1) (1.8) (94.5) (6.3)    
Foreign currency gain (loss) (0.3) 0.0 3.9 0.0    
Husky Transaction costs (1.0) (2.8) (95.2) (2.8)    
Loss on disposal of assets (0.2) 0.0 (1.1) 0.0    
Severance cost (2.5) 0.0 (6.7) 0.0    
Loss on remeasurement of TRA liability     (28.1) 0.0    
Fair value inventory step-up     (23.6) 0.0    
Additional earnout cost 0.0 (5.0) 0.0 (5.0)    
Loss on debt extinguishment     (10.6) 0.0    
Mark to market adjustments, net 0.0 (174.9) 0.0 (209.9)    
Spin-Off costs     0.0 (5.6)    
Net income (loss) 76.0 (174.7) (108.7) (179.3)    
Operating Segments | CompoSecure            
Segment Reporting [Line Items]            
Net sales 140.7 120.9 404.7 344.3    
Material 22.8 20.2 71.8 59.7    
Personnel 32.3 30.3 97.0 88.8    
Overhead 13.1 11.7 38.4 37.0    
Professional fees 3.5 3.1 9.8 11.5    
Management fees 5.1 3.7 14.3 8.2    
Sales and marketing 0.5 0.2 1.6 0.8    
Other segment expenses 2.2 1.9 7.8 4.0    
Adjusted EBITDA 61.2 49.8 164.0 134.3    
Total cash 72.5 97.2 72.5 97.2    
Total assets 275.6 280.8 275.6 280.8    
Operating Segments | Husky            
Segment Reporting [Line Items]            
Net sales 368.9 0.0 985.9 0.0    
Material 132.6 0.0 348.0 0.0    
Personnel 95.8 0.0 291.7 0.0    
Overhead 34.4 0.0 90.1 0.0    
Professional fees 6.2 0.0 14.0 0.0    
Management fees 8.7 0.0 26.0 0.0    
Sales and marketing 2.6 0.0 11.2 0.0    
Other segment expenses (0.2) 0.0 10.0 0.0    
Adjusted EBITDA 88.8 $ 0.0 194.9 $ 0.0    
Total cash 96.9   96.9      
Total assets $ 5,884.7   $ 5,884.7