v3.26.3
Note 15 - Segmental Information - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 27, 2026
Sep. 28, 2025
Sep. 27, 2026
Sep. 28, 2025
Dec. 31, 2025
Revenue from Contract with Customer, Excluding Assessed Tax $ 91.7 $ 95.6 $ 273.1 $ 300.7  
Other cost of sales (69.3) (72.8) (203.7) (231.7)  
Amortization     (0.6) (0.6)  
Share-based compensation charges (0.9) (1.0) (3.0) (2.8)  
Restructuring charges (0.7) (3.4) (4.5) (5.2)  
Other Operating Income (Expense), Net (4.7) 0.0 (6.5) 0.0  
Defined benefit pension charge (0.1) 0.6 (0.2) 1.8  
Interest expense, net (1.0) (0.7) (2.7) (2.4)  
Income before tax from continuing operations 1.7 5.5 13.6 17.8  
Loss on assets held for sale 0.0 0.0 0.0 (2.8)  
Disposal costs (1.0) (1.1) (1.0) (1.2)  
Restructuring Charges 0.7 3.4 4.5 5.2  
Segment, assets 383.3   383.3   $ 369.7
Segments, capital expenditures 3.2 1.7 8.0 4.9  
Operating Segments [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax 91.7 95.6 273.1 300.7  
Manufacturing fixed costs (14.8) (16.3) (44.9) (51.6)  
Other cost of sales [1] (54.5) (56.5) (158.8) (180.1)  
Other segment items [2] (12.1) (11.5) (37.3) (38.0)  
Segment adjusted EBITA 10.3 11.3 32.1 31.0  
Amortization (0.2) (0.2) (0.6) (0.6)  
Share-based compensation charges (0.9) (1.0) (3.0) (2.8)  
Restructuring charges (0.7) (3.4) (4.5) (5.2)  
Other Operating Income (Expense), Net (4.7)   (6.5)    
Defined benefit pension charge (0.1) 0.6 (0.2) 1.8  
Interest expense, net (1.0) (0.7) (2.7) (2.4)  
Income before tax from continuing operations 1.7 5.5 13.6 17.8  
Loss on assets held for sale   0.0   (2.8)  
Disposal costs   (1.1)   (1.2)  
Segment, depreciation and amortization 2.2 2.6 6.7 7.5  
Restructuring Charges 0.7 3.4 4.5 5.2  
Segment, assets 316.6   316.6   298.3
Segments, capital expenditures 3.2 1.7 8.0 4.9  
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]          
Segment, assets 66.7   66.7   71.4
Segments, capital expenditures 0.0 0.0 0.0 0.0  
Gas Cylinders Segment [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax 42.6 42.9 130.6 131.0  
Restructuring charges (0.3)   (3.9)    
Restructuring Charges 0.3   3.9    
Gas Cylinders Segment [Member] | Operating Segments [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax 42.6 42.9 130.6 131.0  
Manufacturing fixed costs (6.4) (7.5) (19.6) (22.6)  
Other cost of sales [1] (27.9) (28.5) (87.9) (87.9)  
Other segment items [2] (4.2) (4.1) (12.7) (11.9)  
Segment adjusted EBITA 4.1 2.8 10.4 8.6  
Restructuring charges (0.3) (0.9) (3.9) (3.0)  
Segment, depreciation and amortization 0.7 0.9 2.0 2.6  
Restructuring Charges 0.3 0.9 3.9 3.0  
Segment, assets 126.1   126.1   121.8
Segments, capital expenditures 1.2 0.5 2.5 1.3  
Elektron Segment [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax 46.7 50.0 136.1 149.5  
Restructuring charges (0.4)   (0.6)    
Restructuring Charges 0.4   0.6    
Elektron Segment [Member] | Operating Segments [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax 46.7 50.0 136.1 149.5  
Manufacturing fixed costs (8.2) (8.8) (24.7) (24.3)  
Other cost of sales [1] (25.0) (26.4) (67.2) (80.6)  
Other segment items [2] (7.4) (6.4) (22.8) (21.2)  
Segment adjusted EBITA 6.1 8.4 21.4 23.4  
Restructuring charges (0.4) (2.6) (0.6) (2.6)  
Segment, depreciation and amortization 1.5 1.7 4.7 4.9  
Restructuring Charges 0.4 2.6 0.6 2.6  
Segment, assets 184.5   184.5   171.0
Segments, capital expenditures 2.0 1.2 5.4 3.3  
Superform Segment [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax 2.4 2.7 6.4 6.8  
Superform Segment [Member] | Operating Segments [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax 2.4 2.7 6.4 6.8  
Manufacturing fixed costs (0.2) 0.0 (0.6) (0.7)  
Other cost of sales [1] (1.6) (1.6) (3.7) (4.2)  
Other segment items [2] (0.5) (1.0) (1.8) (1.8)  
Segment adjusted EBITA 0.1 0.1 0.3 0.1  
Restructuring charges 0.0 0.1 0.0 0.4  
Segment, depreciation and amortization 0.0 0.0 0.0 0.0  
Restructuring Charges 0.0 (0.1) 0.0 (0.4)  
Segment, assets 6.0   6.0   5.5
Segments, capital expenditures 0.0 0.0 0.1 0.2  
Graphic Arts Segment [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax   0.0   13.4  
Graphic Arts Segment [Member] | Operating Segments [Member]          
Revenue from Contract with Customer, Excluding Assessed Tax 0.0 0.0 0.0 13.4  
Manufacturing fixed costs 0.0 0.0 0.0 (4.0)  
Other cost of sales [1] 0.0 0.0 0.0 (7.4)  
Other segment items [2] 0.0 0.0 0.0 (3.1)  
Segment adjusted EBITA 0.0 0.0 0.0 (1.1)  
Segment, assets 0.0   0.0   $ 0.0
Segments, capital expenditures $ 0.0 $ 0.0 $ 0.0 $ 0.1  
[1] Other cost of sales includes material costs and variable costs.
[2] Other segment items primarily consists of sales, marketing, research and development, general and admin costs.