Operating Segments and Related Information - Schedule of Company's Operating Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	$ 1,107.1	$ 1,423.0
Cost of revenue	898.3	1,207.0
Selling, general and administrative	160.2	168.0
Depreciation and amortization	17.6	20.2
Other operating (income) loss	(9.0)	1.3
Income from operations	40.0	26.5
Other data:
Capital expenditures	19.0	18.4
Investments	3.6	1.8
Total assets	891.1	1,043.6
Non-Operating Corporate
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	0.0	0.0
Cost of revenue	0.0	0.0
Selling, general and administrative	12.7	15.8
Depreciation and amortization	0.1	0.1
Other operating (income) loss	0.2	0.5
Income from operations	(13.0)	(16.4)
Other data:
Capital expenditures	0.0	0.3
Investments	1.8	0.0
Total assets	16.7	7.3
Other and Eliminations
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	0.0	0.0
Cost of revenue	0.0	0.0
Selling, general and administrative	0.0	2.0
Depreciation and amortization	0.0	0.0
Other operating (income) loss	0.0	1.1
Income from operations	0.0	(3.1)
Other data:
Capital expenditures	0.0	0.0
Investments	0.0	0.0
Total assets	0.0	0.0
Infrastructure
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	1,071.6	1,397.2
Infrastructure | Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	1,071.6	1,397.2
Cost of revenue	880.4	1,192.6
Selling, general and administrative	123.1	126.0
Depreciation and amortization	12.0	14.4
Other operating (income) loss	(9.6)	(0.2)
Income from operations	65.7	64.4
Other data:
Capital expenditures	17.6	16.6
Investments	0.0	0.0
Total assets	683.6	851.4
Life Sciences
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	9.8	3.3
Life Sciences | Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	9.8	3.3
Cost of revenue	6.4	2.6
Selling, general and administrative	17.1	15.2
Depreciation and amortization	0.4	0.5
Other operating (income) loss	0.0	0.0
Income from operations	(14.1)	(15.0)
Other data:
Capital expenditures	0.0	0.5
Investments	1.8	1.8
Total assets	11.9	8.3
Equity method investments	0.9	0.9
Spectrum
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	25.7	22.5
Spectrum | Operating Segments
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenue	25.7	22.5
Cost of revenue	11.5	11.8
Selling, general and administrative	7.3	9.0
Depreciation and amortization	5.1	5.2
Other operating (income) loss	0.4	(0.1)
Income from operations	1.4	(3.4)
Other data:
Capital expenditures	1.4	1.0
Investments	0.0	0.0
Total assets	$ 178.9	$ 176.6