v3.26.1
Segments and Related Information - Schedule of Operating Segments (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Revenue $ 421.6 $ 242.0 $ 786.4 $ 516.2  
Cost of revenue 342.1 196.4 653.4 425.1  
Selling, general and administrative expenses 41.5 35.1 80.9 72.9  
Depreciation and amortization 3.5 4.4 7.7 8.8  
Other operating loss (income) 0.0 1.2 (0.1) 1.1  
Income (loss) from operations 34.5 4.9 44.5 8.3  
Other data:          
Capital cash expenditures 10.4 6.1 19.9 10.8  
Investments 2.2   2.2   $ 1.8
Total assets 1,006.7   1,006.7   950.1
Investments 2.2   2.2   1.8
Total assets 831.7   831.7   775.6
Total assets, held for sale 169.5   169.5   167.7
Infrastructure          
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Revenue 414.0 233.1 771.9 498.0  
Life Sciences          
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Revenue 2.2 3.2 3.8 6.3  
Spectrum Segment          
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Revenue 5.4 5.7 10.7 11.9  
Operating Segments | Infrastructure          
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Revenue 414.0 233.1 771.9 498.0  
Cost of revenue 337.6 191.4 644.6 414.9  
Selling, general and administrative expenses 34.1 26.8 66.1 56.1  
Depreciation and amortization 2.8 3.1 5.7 6.2  
Other operating loss (income)   1.2 0.0 1.1  
Income (loss) from operations 39.5 10.6 55.5 19.7  
Other data:          
Capital cash expenditures 9.9 5.1 18.8 9.2  
Investments 0.0   0.0   0.0
Total assets 820.1   820.1   758.9
Operating Segments | Life Sciences          
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Revenue 2.2 3.2 3.8 6.3  
Cost of revenue 1.3 2.1 2.7 4.4  
Selling, general and administrative expenses 1.6 3.8 3.9 7.5  
Depreciation and amortization 0.0 0.1 0.1 0.2  
Other operating loss (income)   0.0 0.0 0.0  
Income (loss) from operations (0.7) (2.8) (2.9) (5.8)  
Other data:          
Capital cash expenditures 0.0 (0.1) 0.0 0.0  
Investments 1.8   1.8   1.8
Total assets 7.6   7.6   9.6
Equity method investments 0.9   0.9   0.9
Operating Segments | Spectrum Segment          
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Revenue 5.4 5.7 10.7 11.9  
Cost of revenue 3.2 2.9 6.1 5.8  
Selling, general and administrative expenses 3.1 1.9 4.8 3.8  
Depreciation and amortization 0.7 1.2 1.9 2.4  
Other operating loss (income)   0.0 (0.1) 0.0  
Income (loss) from operations (1.6) (0.3) (2.0) (0.1)  
Other data:          
Capital cash expenditures 0.5 1.1 1.1 1.6  
Investments, held for sale 0.0   0.0   0.0
Total assets, held for sale 175.0   175.0   174.5
Non-Operating Corporate          
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Revenue 0.0 0.0 0.0 0.0  
Cost of revenue 0.0 0.0 0.0 0.0  
Selling, general and administrative expenses 2.7 2.6 6.1 5.5  
Depreciation and amortization 0.0 0.0 0.0 0.0  
Other operating loss (income)   0.0 0.0 0.0  
Income (loss) from operations (2.7) (2.6) (6.1) (5.5)  
Other data:          
Capital cash expenditures 0.0 0.0 0.0 0.0  
Investments 0.4   0.4   0.0
Total assets 4.0   4.0   7.1
Other and Eliminations          
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]          
Revenue 0.0 0.0 0.0 0.0  
Cost of revenue 0.0 0.0 0.0 0.0  
Selling, general and administrative expenses 0.0 0.0 0.0 0.0  
Depreciation and amortization 0.0 0.0 0.0 0.0  
Other operating loss (income)   0.0 0.0 0.0  
Income (loss) from operations 0.0 0.0 0.0 0.0  
Other data:          
Capital cash expenditures 0.0 $ 0.0 0.0 $ 0.0  
Investments 0.0   0.0   0.0
Total assets $ 0.0   $ 0.0   $ 0.0